CA2402033A1 - Method and device for extracting oil from plant material - Google Patents
Method and device for extracting oil from plant material Download PDFInfo
- Publication number
- CA2402033A1 CA2402033A1 CA 2402033 CA2402033A CA2402033A1 CA 2402033 A1 CA2402033 A1 CA 2402033A1 CA 2402033 CA2402033 CA 2402033 CA 2402033 A CA2402033 A CA 2402033A CA 2402033 A1 CA2402033 A1 CA 2402033A1
- Authority
- CA
- Canada
- Prior art keywords
- container
- solvent
- plant material
- outlet apertures
- inlet aperture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0215—Solid material in other stationary receptacles
- B01D11/0219—Fixed bed of solid material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
A method and device is provided for extracting oils, from plant material, of the type used for aroma-therapy or cooking and the like. The device comprises a container having a single inlet aperture in a top end and a plurality of outlet apertures in a bottom end opposite the inlet aperture. The plant material is placed in the container and supported above a suitable receptacle. An organic solvent having a boiling point below ambient temperature, such as butane, is dispensed from a pressurised vessel into the inlet aperture of the container and is allowed to drain into the receptacle through the outlet apertures after forming a solution with the oils of the plant material. The organic solvent is then permitted to evaporate from the solution in the receptacle leaving the extracted oils in the receptacle.
Description
METHOD AND DEVICE FOR EXTRACTING OIL FROM
PLANT MATERIAL
FIELD OF THE INVENTION
The present invention relates to a method for extracting oil from plant material and to a device used therefor.
BACKGROUND
Oils from plant material, including oils from rose petals or herbs like rosemary and thyme, are commonly used for aroma-therapy or possibly as cooking oils. A conventional method of extracting these oils from the plant material, is to mix the plant material with a suitable organic solvent which can be mixed with the plant material at room temperature to form a slurry of solvent and plant material.
The solvent and oils of the plant material can then be drained from the slurry.
Separation of the solution of oils and conventional solvents however, requires heating the solution so that the solvent evaporates, leaving the oils. Typical known solvents include fuels which can be highly volatile when heated, making the process considerably dangerous.
SUMMARY
According to one aspect of the present invention there is provided a method of extracting oil from plant material, said method comprising:
providing a solvent having a boiling point below ambient temperature at atmospheric pressure;
providing a container having an inlet aperture and a plurality of outlet apertures opposite the inlet aperture;
placing the plant material in the container;
providing a receptacle;
dispensing the solvent into the inlet aperture of the container;
. CA 02402033 2002-09-09 supporting the container above the receptacle with the outlet apertures facing downward into the receptacle while dispensing the solvent into the inlet aperture and until the solvent has substantially drained from the outlet apertures into the receptacle; and storing the receptacle at atmospheric pressure until the solvent has substantially evaporated from the receptacle.
The use of a solvent having a boiling point below room temperature ensures that the solvent can be separated from the oils by natural evaporation without additional heating as would be required with conventional solvents for this use. The use of a suitable container having an inlet and plural outlet apertures, enables the solvent to be maintained under pressure briefly as a liquid for forming a solution with the oils of the plant material.
The solvent preferably comprises a gaseous fuel, for example butane, which is stored in a pressurised vessel so that the solvent may be contained under pressure as a liquid before dispensing into the container.
For best results, the plant material is crushed before placement in the container.
The method preferably includes maintaining the solvent at or below ambient temperature.
According to further aspect of the present invention there is provided an oil extraction device is provided for extracting oil from plant material, the device comprising:
an elongate container for receiving plant material therein;
a single inlet aperture in a first end of the container; and a plurality of outlet apertures in a second end of the container opposite the single inlet aperture.
PLANT MATERIAL
FIELD OF THE INVENTION
The present invention relates to a method for extracting oil from plant material and to a device used therefor.
BACKGROUND
Oils from plant material, including oils from rose petals or herbs like rosemary and thyme, are commonly used for aroma-therapy or possibly as cooking oils. A conventional method of extracting these oils from the plant material, is to mix the plant material with a suitable organic solvent which can be mixed with the plant material at room temperature to form a slurry of solvent and plant material.
The solvent and oils of the plant material can then be drained from the slurry.
Separation of the solution of oils and conventional solvents however, requires heating the solution so that the solvent evaporates, leaving the oils. Typical known solvents include fuels which can be highly volatile when heated, making the process considerably dangerous.
SUMMARY
According to one aspect of the present invention there is provided a method of extracting oil from plant material, said method comprising:
providing a solvent having a boiling point below ambient temperature at atmospheric pressure;
providing a container having an inlet aperture and a plurality of outlet apertures opposite the inlet aperture;
placing the plant material in the container;
providing a receptacle;
dispensing the solvent into the inlet aperture of the container;
. CA 02402033 2002-09-09 supporting the container above the receptacle with the outlet apertures facing downward into the receptacle while dispensing the solvent into the inlet aperture and until the solvent has substantially drained from the outlet apertures into the receptacle; and storing the receptacle at atmospheric pressure until the solvent has substantially evaporated from the receptacle.
The use of a solvent having a boiling point below room temperature ensures that the solvent can be separated from the oils by natural evaporation without additional heating as would be required with conventional solvents for this use. The use of a suitable container having an inlet and plural outlet apertures, enables the solvent to be maintained under pressure briefly as a liquid for forming a solution with the oils of the plant material.
The solvent preferably comprises a gaseous fuel, for example butane, which is stored in a pressurised vessel so that the solvent may be contained under pressure as a liquid before dispensing into the container.
For best results, the plant material is crushed before placement in the container.
The method preferably includes maintaining the solvent at or below ambient temperature.
According to further aspect of the present invention there is provided an oil extraction device is provided for extracting oil from plant material, the device comprising:
an elongate container for receiving plant material therein;
a single inlet aperture in a first end of the container; and a plurality of outlet apertures in a second end of the container opposite the single inlet aperture.
A filter member preferably spans the plurality of outlet apertures.
The container may include a sealable cap member for permitting access to an interior of the container. The cap member is preferably threadably secured to the container. The plurality of outlet apertures may be situated in the cap member at the second end of the container.
There may be provided a resilient sealing member secured between the cap member and the container.
The container may comprise a tubular member formed of rigid plastic material.
At least one raised protrusion, is preferably located on an outer side of the second end of the container in proximity to the outlet apertures.
The inlet aperture may be located on the first end of the container which is formed integrally with the container.
The inlet aperture preferably has a diameter substantially between 1/8~" of an inch and 1/16' of an inch.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is an exploded isometric view of the oil extraction device.
Figure 2 is a partly sectional side elevational view of the oil extraction device as it is used for extracting oil from plant material.
DETAILED DESCRIPTION
Referring to the accompanying drawings, there is illustrated an oil extraction device generally indicated by reference numeral 10. The device 10 is suitably arranged for extracting oil from plant material 12 in a safe and efficient manner.
The container may include a sealable cap member for permitting access to an interior of the container. The cap member is preferably threadably secured to the container. The plurality of outlet apertures may be situated in the cap member at the second end of the container.
There may be provided a resilient sealing member secured between the cap member and the container.
The container may comprise a tubular member formed of rigid plastic material.
At least one raised protrusion, is preferably located on an outer side of the second end of the container in proximity to the outlet apertures.
The inlet aperture may be located on the first end of the container which is formed integrally with the container.
The inlet aperture preferably has a diameter substantially between 1/8~" of an inch and 1/16' of an inch.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is an exploded isometric view of the oil extraction device.
Figure 2 is a partly sectional side elevational view of the oil extraction device as it is used for extracting oil from plant material.
DETAILED DESCRIPTION
Referring to the accompanying drawings, there is illustrated an oil extraction device generally indicated by reference numeral 10. The device 10 is suitably arranged for extracting oil from plant material 12 in a safe and efficient manner.
The oil extraction device generally comprises a container 14 which is generally tubular in shape, being molded of a rigid, inert plastic. A first end 16 of the container is integrally closed with the tubular walls of the container 14. A
single inlet aperture 18 is centrally located within the end wall at the first end 16 of the container.
A second end 20 of the container includes an access opening 22 therein spanning the full cross sectional area of the container. The access opening 22 is enclosed by a suitable cap 24 having internal threads therein for threaded securement to external threads about a periphery of the tubular container 14 at the second end 20 thereof. A flat annular edge 26 is defined about the access opening 22 for sealing engagement with the cap 24. The cap 24 includes a flat circular end surface 28 for abutment against the flat annular edge of the container. An O
ring seal 30 is provided for securement between the flat annular edge 26 of the container and the flat end surface 28 of the cap 24.
A plurality of outlet apertures 32 are provided in the flat end surface 28 of the cap at spaced locations about the end surface. Both the inlet aperture 18 and the outlet apertures 32 are approximately 1/16th of an inch in diameter. Five outlet apertures 32 are illustrated in a circumferentially spaced arrangement. The outlet apertures 32 are located opposite the inlet aperture 18 at opposite ends of the elongate tubular shaped container 14.
A circular filter 34 is provided, being suitably sized to span the flat end surface 28 of the cap 24, including the outlet apertures 32 located therein.
The filter is made of a fine particle trapping material, of the type commonly used for coffee filters and the like. The filter 34 is arranged to overlap the flat annular edge 26 about a full circumference of the access opening 22. When assembled on the container 14, the seal 30 is preferably abutted directly against the flat annular edge 26, with the filter 34 being subsequently engaged between the seal 30 and the flat end surface 28 of the cap 24.
A plurality of raised protrusions 36 are located on an outer side of the flat end surface 28 of the cap 24 at the second end of the container, which project outwardly from the container. The protrusions 36 are each located in proximity to one of the plural outlet apertures 32 in the cap 24 to prevent undesirable sealing of the outlet apertures 32 in the event that the second end of the container 14 were pressed up against a flat supporting surface spanning the outlet apertures. In this arrangement it is less likely that pressure can be inadvertently built up within the container, as the raised protrusions 36 make it difficult to seal the outer side of the cap 24 against a supporting surface.
A textured gripping surface 38 is provided about an outer periphery of the cap 24 to ensure that the cap 24 may be easily grasped by a person for tight engagement against the flat annular edge 26 of the container when the cap is threaded thereon.
In use, the plant material from which the desired oils are to be extracted is first crushed to expose as many oil bearing parts of the plant material as possible. The crushed plant material 12 is then placed within the container 14 by removing the cap 24. The O ring 30 and circular filter 34 are positioned to span about the flat annular edge 26 of the container before the cap 24 is again threadably secured thereon. The container 14 is then supported in an inverted position with the first end 16 being located directly above the second end 20 so that the outlet apertures 32 face downwardly into a suitable receptacle 40. The receptacle 40 may comprise any suitable vessel for containing liquid therein having an open top end for communication with the outlet apertures 32 of the container.
Butane is provided in the form of a conventional pressurized container 42 having a suitable nozzle 44 permitting release of the butane stored under pressure as a liquid therein at room temperature, only when the nozzle 44 is deflected from a normally closed position. The container 42 having the butane solvent contained as a liquid therein at room temperature and atmospheric pressure, dispenses the butane into the inlet aperture 18 of the container 14 by aligning the nozzle 44 with the inlet aperture at which point the nozzle is deflected while the container is supported in the inverted position above the receptacle 40 with the outlet apertures 32 facing downward.
As the butane under pressure is dispensed into the container, the container is initially cooled by the rapid evaporation and expansion of the butane and is also pressurized by the rapid dispensing of butane under pressure therein so that the later portion of butane dispensed into the container remains as a liquid so as to form a solution with the oils of the crushed plant material. By continued support of the container above the receptacle 40, the solution of butane solvent and oils from the plant material are passed through the filter 34 spanning the outlet apertures so that the remaining plant material is contained within the container 14 while the solution of solvent and soils is free to pass through the outlet apertures and into the receptacle 40.
By holding the container in an inverted position for an elapsed period of time, possibly in the order of several minutes, the majority of the oils from the plant material can be drained into the receptacle 40 with the butane solvent.
The receptacle may then be stored for a prescribed period of time, possibly in the order of several hours or even a full day, so that the butane solvent evaporates from the receptacle due to its boiling point being below that of ambient room temperature at atmospheric pressure. No heating is thus required to separate the solvent from the oils collected as would normally be required when using conventional solvents.
single inlet aperture 18 is centrally located within the end wall at the first end 16 of the container.
A second end 20 of the container includes an access opening 22 therein spanning the full cross sectional area of the container. The access opening 22 is enclosed by a suitable cap 24 having internal threads therein for threaded securement to external threads about a periphery of the tubular container 14 at the second end 20 thereof. A flat annular edge 26 is defined about the access opening 22 for sealing engagement with the cap 24. The cap 24 includes a flat circular end surface 28 for abutment against the flat annular edge of the container. An O
ring seal 30 is provided for securement between the flat annular edge 26 of the container and the flat end surface 28 of the cap 24.
A plurality of outlet apertures 32 are provided in the flat end surface 28 of the cap at spaced locations about the end surface. Both the inlet aperture 18 and the outlet apertures 32 are approximately 1/16th of an inch in diameter. Five outlet apertures 32 are illustrated in a circumferentially spaced arrangement. The outlet apertures 32 are located opposite the inlet aperture 18 at opposite ends of the elongate tubular shaped container 14.
A circular filter 34 is provided, being suitably sized to span the flat end surface 28 of the cap 24, including the outlet apertures 32 located therein.
The filter is made of a fine particle trapping material, of the type commonly used for coffee filters and the like. The filter 34 is arranged to overlap the flat annular edge 26 about a full circumference of the access opening 22. When assembled on the container 14, the seal 30 is preferably abutted directly against the flat annular edge 26, with the filter 34 being subsequently engaged between the seal 30 and the flat end surface 28 of the cap 24.
A plurality of raised protrusions 36 are located on an outer side of the flat end surface 28 of the cap 24 at the second end of the container, which project outwardly from the container. The protrusions 36 are each located in proximity to one of the plural outlet apertures 32 in the cap 24 to prevent undesirable sealing of the outlet apertures 32 in the event that the second end of the container 14 were pressed up against a flat supporting surface spanning the outlet apertures. In this arrangement it is less likely that pressure can be inadvertently built up within the container, as the raised protrusions 36 make it difficult to seal the outer side of the cap 24 against a supporting surface.
A textured gripping surface 38 is provided about an outer periphery of the cap 24 to ensure that the cap 24 may be easily grasped by a person for tight engagement against the flat annular edge 26 of the container when the cap is threaded thereon.
In use, the plant material from which the desired oils are to be extracted is first crushed to expose as many oil bearing parts of the plant material as possible. The crushed plant material 12 is then placed within the container 14 by removing the cap 24. The O ring 30 and circular filter 34 are positioned to span about the flat annular edge 26 of the container before the cap 24 is again threadably secured thereon. The container 14 is then supported in an inverted position with the first end 16 being located directly above the second end 20 so that the outlet apertures 32 face downwardly into a suitable receptacle 40. The receptacle 40 may comprise any suitable vessel for containing liquid therein having an open top end for communication with the outlet apertures 32 of the container.
Butane is provided in the form of a conventional pressurized container 42 having a suitable nozzle 44 permitting release of the butane stored under pressure as a liquid therein at room temperature, only when the nozzle 44 is deflected from a normally closed position. The container 42 having the butane solvent contained as a liquid therein at room temperature and atmospheric pressure, dispenses the butane into the inlet aperture 18 of the container 14 by aligning the nozzle 44 with the inlet aperture at which point the nozzle is deflected while the container is supported in the inverted position above the receptacle 40 with the outlet apertures 32 facing downward.
As the butane under pressure is dispensed into the container, the container is initially cooled by the rapid evaporation and expansion of the butane and is also pressurized by the rapid dispensing of butane under pressure therein so that the later portion of butane dispensed into the container remains as a liquid so as to form a solution with the oils of the crushed plant material. By continued support of the container above the receptacle 40, the solution of butane solvent and oils from the plant material are passed through the filter 34 spanning the outlet apertures so that the remaining plant material is contained within the container 14 while the solution of solvent and soils is free to pass through the outlet apertures and into the receptacle 40.
By holding the container in an inverted position for an elapsed period of time, possibly in the order of several minutes, the majority of the oils from the plant material can be drained into the receptacle 40 with the butane solvent.
The receptacle may then be stored for a prescribed period of time, possibly in the order of several hours or even a full day, so that the butane solvent evaporates from the receptacle due to its boiling point being below that of ambient room temperature at atmospheric pressure. No heating is thus required to separate the solvent from the oils collected as would normally be required when using conventional solvents.
While one embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. For instance, other solvents having similar properties may be used to permit evaporation of the solvent from the solution of plant material oils without the requirement of heat being added. The invention is to be considered limited solely by the scope of the appended claims.
Claims (20)
1. An oil extraction device is provided for extracting oil from plant material, the device comprising:
an elongate container for receiving plant material therein;
a single inlet aperture in a first end of the container; and a plurality of outlet apertures in a second end of the container opposite the single inlet aperture.
an elongate container for receiving plant material therein;
a single inlet aperture in a first end of the container; and a plurality of outlet apertures in a second end of the container opposite the single inlet aperture.
2. The device according to Claim 1 wherein there is provided a filter member arranged to span the plurality of outlet apertures.
3. The device according to Claim 1 wherein the container includes a sealable cap member for permitting access to an interior of the container.
4. The device according to Claim 3 wherein the cap member is threadably secured to the container.
5. The device according to Claim 3 wherein the plurality of outlet apertures are situated in the cap member at the second end of the container.
6. The device according to Claim 3 wherein there is provided a resilient sealing member secured between the cap member and the container.
7. The device according to Claim 1 wherein the container comprises a tubular member formed of rigid plastic material.
8. The device according to Claim 1 wherein there is provided at least one raised protrusion on an outer side of the second end of the container in proximity to the outlet apertures.
9. The device according to Claim 1 wherein the inlet aperture is located on the first end of the container which is formed integrally with the container.
10. The device according to Claim 1 wherein the inlet aperture has a diameter substantially between 1/18th of an inch and 1/16th of an inch.
11. A method of extracting oil from plant material, said method comprising:
providing a solvent having a boiling point below ambient temperature at atmospheric pressure;
providing a container having an inlet aperture and a plurality of outlet apertures opposite the inlet aperture;
placing the plant material in the container;
providing a receptacle;
dispensing the solvent into the inlet aperture of the container;
supporting the container above the receptacle with the outlet apertures facing downward into the receptacle while dispensing the solvent into the inlet aperture and until the solvent has substantially drained from the outlet apertures into the receptacle; and storing the receptacle at atmospheric pressure until the solvent has substantially evaporated from the receptacle.
providing a solvent having a boiling point below ambient temperature at atmospheric pressure;
providing a container having an inlet aperture and a plurality of outlet apertures opposite the inlet aperture;
placing the plant material in the container;
providing a receptacle;
dispensing the solvent into the inlet aperture of the container;
supporting the container above the receptacle with the outlet apertures facing downward into the receptacle while dispensing the solvent into the inlet aperture and until the solvent has substantially drained from the outlet apertures into the receptacle; and storing the receptacle at atmospheric pressure until the solvent has substantially evaporated from the receptacle.
12. The method according to Claim 11 wherein the solvent comprises a gaseous fuel.
13. The method according to Claim 11 wherein the solvent comprises butane.
14. The method according to Claim 11 including providing solvent in a pressurised container.
15. The method according to Claim 11 including storing the solvent under pressure as a liquid before dispensing into the container.
16. The method according to Claim 11 including crushing the plant material before placing the plant material in the container.
17. The method according to Claim 11 including providing a filter spanning the outlet apertures.
18. The method according to Claim 11 wherein the container comprises a rigid plastic container.
19. The method according to Claim 11 including maintaining the solvent at or below ambient temperature.
20. The method according to Claim 11 including providing an access opening in the container, a cap member spanning the access opening and a resilient sealing member sealing between the cap member and the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2402033 CA2402033A1 (en) | 2002-09-09 | 2002-09-09 | Method and device for extracting oil from plant material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2402033 CA2402033A1 (en) | 2002-09-09 | 2002-09-09 | Method and device for extracting oil from plant material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2402033A1 true CA2402033A1 (en) | 2004-03-09 |
Family
ID=32046540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2402033 Abandoned CA2402033A1 (en) | 2002-09-09 | 2002-09-09 | Method and device for extracting oil from plant material |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2402033A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990294A (en) * | 2014-05-28 | 2014-08-20 | 昆山市富众网络科技有限公司 | Crab shell crushing and extracting device |
| WO2017026897A1 (en) | 2015-08-13 | 2017-02-16 | Bruining Wernard Ernest | Extraction device and an extraction method for extraction of cannabis |
-
2002
- 2002-09-09 CA CA 2402033 patent/CA2402033A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990294A (en) * | 2014-05-28 | 2014-08-20 | 昆山市富众网络科技有限公司 | Crab shell crushing and extracting device |
| CN103990294B (en) * | 2014-05-28 | 2015-12-30 | 昆山市富众网络科技有限公司 | A kind of Carapax Eriocheir sinensis is broken, extraction equipment |
| WO2017026897A1 (en) | 2015-08-13 | 2017-02-16 | Bruining Wernard Ernest | Extraction device and an extraction method for extraction of cannabis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4211750A (en) | Brush and deodorant holder | |
| US5932098A (en) | Filtration apparatus for brewing and drinking coffee and like beverages and concurrently enabling a user to drink directly from the apparatus | |
| KR100788306B1 (en) | Vacuum low temperature extraction equipment with ultrasonic vibrator | |
| CN110997151B (en) | Cryogenic separation of plant material | |
| WO2013062974A1 (en) | Combination herb storage, grinder and pouring container | |
| US10293274B2 (en) | Essential oil extraction, recovery, and purge system and method | |
| WO2001066431B1 (en) | Container comprising a turn-lock fastener | |
| EP0570306B1 (en) | Apparatus for extracting, concentrating and separating biochemical products from vegetable or animal biological substances | |
| GB2269772A (en) | Aerosol can waste disposal device | |
| US20200277545A1 (en) | Apparatus and method for acquiring essential oils | |
| CA2402033A1 (en) | Method and device for extracting oil from plant material | |
| KR200438307Y1 (en) | Device of extracting aroma oil using steam distillation | |
| JP2002338991A (en) | Extraction method for plant-derived extract and extraction apparatus therefor | |
| KR102181232B1 (en) | Vacuum evaporative concentration device | |
| JPH11192165A (en) | Herb water extractor | |
| US4450966A (en) | Survival kit | |
| CA2173979C (en) | Apparatus for processing hydrated biological materials | |
| GB2374296A (en) | Distillation of volatile constituent from natural material without use of solvent | |
| JP2010000506A (en) | Extraction method of vegetable-derived extract and extraction apparatus of the same | |
| RU2293697C1 (en) | Container for heating and storing food products | |
| KR970074911A (en) | Oil extraction method from oil-containing plants | |
| KR200223000Y1 (en) | Multipurpose abstraction system | |
| RU2216379C2 (en) | Method of extraction of biologically active agents and plant for realization of this method | |
| JPH0354665Y2 (en) | ||
| US20200001202A1 (en) | Oil extraction apparatus with collapsible bag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |