CN114441517B - Analysis device for hydrogen peroxide in hydrogen peroxide raffinate - Google Patents

Analysis device for hydrogen peroxide in hydrogen peroxide raffinate Download PDF

Info

Publication number
CN114441517B
CN114441517B CN202111661045.XA CN202111661045A CN114441517B CN 114441517 B CN114441517 B CN 114441517B CN 202111661045 A CN202111661045 A CN 202111661045A CN 114441517 B CN114441517 B CN 114441517B
Authority
CN
China
Prior art keywords
mixing
rod
hydrogen peroxide
analysis
test tube
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.)
Active
Application number
CN202111661045.XA
Other languages
Chinese (zh)
Other versions
CN114441517A (en
Inventor
赵元福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Songda Instrument Co ltd
Original Assignee
Nanjing Songda Instrument Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Songda Instrument Co ltd filed Critical Nanjing Songda Instrument Co ltd
Priority to CN202111661045.XA priority Critical patent/CN114441517B/en
Publication of CN114441517A publication Critical patent/CN114441517A/en
Application granted granted Critical
Publication of CN114441517B publication Critical patent/CN114441517B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40Concentrating samples
    • G01N1/4055Concentrating samples by solubility techniques
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40Concentrating samples
    • G01N1/4055Concentrating samples by solubility techniques
    • G01N2001/4061Solvent extraction
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106General arrangement of respective parts
    • G01N2021/0112Apparatus in one mechanical, optical or electronic block

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The invention provides an analysis device for hydrogen peroxide in hydrogen peroxide raffinate, which comprises a raffinate containing test tube and a mixing mechanism arranged outside the raffinate containing test tube. The invention provides an analysis device which integrates the water adding and mixing of hydrogen peroxide, the addition of a color developing agent and the addition of a detection agent, and can rapidly complete the concentration detection and analysis of the whole hydrogen peroxide; the addition of the water, the color developing agent and the detecting agent is more accurate and quantitative, and the water, the color developing agent and the detecting agent can be uniformly mixed in time, so that the accuracy of detection and analysis results is ensured; the novel mixing mechanism is designed, the raffinate containing test tube can be limited in a specified space for vibration mixing, the original stirring mixing is effectively replaced by vibration mixing, the mixing efficiency is higher, and the detection and analysis result is ensured; multiple groups of concentration detection analysis can be simultaneously carried out on the same batch of hydrogen peroxide raffinate, so that the accuracy of analysis results is improved; the novel structure of the whole body is convenient to produce, manufacture and use, and has good market prospect.

Description

Analysis device for hydrogen peroxide in hydrogen peroxide raffinate
Technical Field
The invention belongs to the technical field of analysis devices, and particularly relates to an analysis device for hydrogen peroxide in hydrogen peroxide raffinate.
Background
Hydrogen peroxide is a green chemical product, and the main consumption fields of hydrogen peroxide in China are textile, chemical industry, papermaking and other industries. In the process of producing hydrogen peroxide by adopting the anthraquinone method, the concentration of hydrogen peroxide in the raffinate needs to be detected so as to timely and accurately guide normal production. The analysis of hydrogen peroxide in the existing raffinate adopts manual sampling, a laboratory adopts a titration method to manually detect the concentration of hydrogen peroxide, records data and then feeds back to a production workshop, the production workshop carries out next work according to indexes obtained by detection, the whole detection flow needs to consume a certain time, and because the factors such as the manual sampling, the detection method and the like also influence the detection result, the deviation of the result easily causes misleading to production and even influences normal production.
Therefore, the device capable of rapidly, efficiently and accurately detecting and analyzing the concentration of the hydrogen peroxide in the raffinate is a problem which needs to be solved by the person skilled in the art.
Disclosure of Invention
In order to solve the problems, the invention discloses an analysis device for hydrogen peroxide in hydrogen peroxide raffinate.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
An analysis device for hydrogen peroxide in hydrogen peroxide raffinate comprises a raffinate containing test tube, a mixing mechanism arranged on the outer side of the raffinate containing test tube, and a switching and adding mechanism arranged above the raffinate containing test tube; the mixing mechanism comprises a containing shell, a mixing rod and a test tube supporting sheet; the top of the holding shell is internally provided with a holding groove; the mixing rods are uniformly distributed in the containing groove, one end of each mixing rod is connected with the groove wall of the containing groove, and the other end of each mixing rod is connected with the test tube supporting piece; the raffinate holding test tube is matched and arranged in a holding space formed by the test tube supporting sheet; the switching and adding mechanism comprises a mixing switching rod, a water storage tank, a color developing agent storage tank and a detection agent storage tank; the water storage tank, the color-developing agent storage tank and the detection agent storage tank are uniformly distributed along the circumferential surface of the mixing switching rod and are respectively matched with an adding valve. Further, the mixing rod comprises a shell connecting rod, a support connecting rod, a shell connecting sheet, a support connecting sheet, a wire, a power supply, a switch and a mixing spring; the rear end of the shell connecting rod is connected with the groove wall of the containing groove, and the front end of the shell connecting rod is internally provided with a mixing adjusting groove; the rear end of the supporting connecting rod is matched and arranged in the mixing adjusting groove, and the front end of the supporting connecting rod is connected with the test tube supporting piece; the shell connecting piece is a silicon steel sheet and is attached to the bottom of the mixing adjusting groove; the support connecting sheet is an iron sheet and is attached to the rear end of the support connecting rod; the wire is spirally and uniformly wound on the surface of the shell connecting sheet and is connected with a power supply and a switch to form a loop; the mixing spring is also arranged in the mixing adjusting groove, and two ends of the mixing spring are respectively connected with the shell connecting piece and the supporting connecting piece. Further, the number of mixing bars is at least 3, and all mixing bars share the same power supply and switch. Further, the switch is a pulse switch, and is adaptively connected with a pulse generator. Further, the mixing switching rod comprises an inner transmission rod and an outer switching rod which are arranged inside and outside; one end of the inner transmission rod is provided with a switching motor in a matching way, and transmission bulges are uniformly distributed on the surface of the inner transmission rod; the outer switching rod is a hollow loop rod and is sleeved on the surface of the inner transmission rod, and transmission grooves matched with the transmission protrusions are uniformly distributed on the inner side surface.
Further, the additional valve is a solenoid valve. Further, the device also comprises an analysis platform; an analysis groove is uniformly formed on one side of the analysis table along a straight line; the mixing mechanism is arranged in the analysis tank; the switching adding mechanism is arranged on any side of the analysis groove on the analysis table, which is in a straight line.
The beneficial effects of the invention are as follows:
1. The analysis device for the hydrogen peroxide in the hydrogen peroxide raffinate integrates the water adding and mixing of the hydrogen peroxide, the addition of the color developing agent and the addition of the detection agent, and can rapidly complete the concentration detection analysis of the whole hydrogen peroxide;
2. the addition of the water, the color developing agent and the detecting agent is more accurate and quantitative, and the water, the color developing agent and the detecting agent can be uniformly mixed in time, so that the accuracy of detection and analysis results is ensured;
3. the novel mixing mechanism is designed, the raffinate containing test tube can be limited in a specified space for vibration mixing, the original stirring mixing is effectively replaced by vibration mixing, the mixing efficiency is higher, and the detection and analysis result is ensured;
4. Multiple groups of concentration detection analysis can be simultaneously carried out on the same batch of hydrogen peroxide raffinate, so that the accuracy of analysis results is improved;
5. the novel structure of the whole body is convenient to produce, manufacture and use, and has good market prospect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a mixing rod according to the present invention.
List of drawing identifiers: raffinate holds test tube 1, holds casing 2, mixed pole 3, test tube backing plate 4, holds groove 5, water storage tank 6, developer storage tank 7, detection agent storage tank 8, add valve 9, casing connecting rod 10, support connecting rod 11, casing connection piece 12, support connection piece 13, wire 14, power 15, switch 16, mixed spring 17, mix adjustment groove 18, interior transfer line 19, external cutting pole 20, switch motor 21, analysis platform 22.
Detailed Description
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention.
Referring to fig. 1, the invention discloses a structure schematic diagram of the invention, which is an analysis device for hydrogen peroxide in hydrogen peroxide raffinate, comprising a raffinate containing test tube 1, a mixing mechanism arranged outside the raffinate containing test tube, and a switching and adding mechanism arranged above the raffinate containing test tube 1.
The invention also includes an analysis stage 22; an analysis groove is uniformly formed on one side of the analysis table 22 along a straight line; the mixing mechanism is arranged in the analysis tank; the switching and adding mechanism is provided on either side of the analysis table 22 where the analysis grooves are aligned.
The mixing mechanism comprises a containing shell 2, a mixing rod 3 and a test tube supporting sheet 4; the top of the holding shell 2 is internally provided with a holding groove 5; the mixing rods 3 are uniformly distributed in the containing groove 5, one end of each mixing rod is connected with the groove wall of the containing groove 5, and the other end of each mixing rod is connected with the test tube supporting sheet 4; the raffinate holds test tube 1 cooperation and sets up in the holding space that test tube supporting plate 4 formed. As shown in fig. 2, the mixing rod includes a housing link 10, a support link 11, a housing link 12, a support link 13, a wire 14, a power source 15, a switch 16, and a mixing spring 17; the rear end of the shell connecting rod 10 is connected with the groove wall of the containing groove 5, and the front end is inwards provided with a mixing adjusting groove 18; the rear end of the supporting connecting rod 11 is matched and arranged in the mixing adjusting groove 18, and the front end is connected with the test tube supporting sheet 4; the shell connecting piece 12 is a silicon steel sheet and is attached to the bottom of the mixing adjusting groove 18; the support connecting sheet 13 is an iron sheet and is attached to the rear end of the support connecting rod 11; the lead 14 is spirally and uniformly wound on the surface of the shell connecting sheet 12 and is connected with the power supply 15 and the switch 16 to form a loop; the mixing spring 17 is likewise arranged in the mixing adjustment groove 18, and both ends are respectively connected to the housing connecting piece 12 and the support connecting piece 13. The number of the above mixing bars 3 is at least 3, and all the mixing bars 3 share the same power supply 15 and switch 16; the switch 16 is a pulse switch, and a pulse generator is adaptively connected.
The switching and adding mechanism comprises a mixing switching rod, a water storage tank 6, a color developing agent storage tank 7 and a detecting agent storage tank 8; the mixing switching rod comprises an inner transmission rod 19 and an outer switching rod 20 which are arranged inside and outside; one end of the inner transmission rod 19 is provided with a switching motor 21 in a matching way, and transmission bulges are uniformly distributed on the surface of the inner transmission rod 19; the outer switching rod 20 is a hollow loop rod and is sleeved on the surface of the inner transmission rod 19, and transmission grooves matched with the transmission protrusions are uniformly distributed on the inner side surface; the water storage tank 6, the color developing agent storage tank 7 and the detection agent storage tank 8 are uniformly distributed along the circumferential surface of the mixing switching rod, and are respectively matched with an adding valve 9, wherein the adding valve 9 is an electromagnetic valve.
When the device is used, the hydrogen peroxide raffinate in the same batch is divided into a plurality of parts and is respectively put into the raffinate containing test tube 1, firstly, an adding valve 9 on a water storage tank 6 is started, water is added into the raffinate containing test tube 1 for mixed extraction, and a pulse generator is utilized to intermittently send pulse signals to the switches 16 in the plurality of mixing rods 3, so that the switches 16 are intermittently opened and closed; under the principle of electricity generation magnetism, the shell connecting piece 12 with the surface wound with the electrified conducting wire 14 generates strong adsorption force on the support connecting piece 13, overcomes the inward elasticity of the mixed spring 17, drives the support connecting rod 11 to shrink, and enables the specific mixed rod 3 to stretch and retract.
A plurality of mixing rods 3 in the holding shell 2 are matched in an extending way, so that the raffinate holding test tube 1 is rapidly vibrated and mixed to finish the mixing extraction step;
then, the adding valves 9 on the developer storage tank 7 and the detector storage tank 8 are sequentially started according to the method, the developer and the detector are sequentially added, and the addition and detection of the mixed finished reagent are performed.
And finally, comparing the plurality of groups of detection analysis data obtained at the same time to obtain final detection analysis data.
It should be noted that the foregoing merely illustrates the technical idea of the present invention and is not intended to limit the scope of the present invention, and that a person skilled in the art may make several improvements and modifications without departing from the principles of the present invention, which fall within the scope of the claims of the present invention.

Claims (3)

1. An analysis device for hydrogen peroxide in hydrogen peroxide raffinate, which is characterized in that: comprises a raffinate containing test tube (1), a mixing mechanism arranged outside the raffinate containing test tube, and a switching and adding mechanism arranged above the raffinate containing test tube (1); the mixing mechanism comprises a containing shell (2), a mixing rod (3) and a test tube supporting sheet (4); the top of the containing shell (2) is internally provided with a containing groove (5); the mixing rods (3) are uniformly distributed in the accommodating groove (5), one end of each mixing rod is connected with the groove wall of the accommodating groove (5), and the other end of each mixing rod is connected with the test tube supporting sheet (4); the raffinate containing test tube (1) is matched and arranged in a containing space formed by the test tube supporting sheet (4); the switching and adding mechanism comprises a mixing switching rod, a water storage tank (6), a color developing agent storage tank (7) and a detecting agent storage tank (8); the water storage tank (6), the color-developing agent storage tank (7) and the detection agent storage tank (8) are uniformly distributed along the circumferential surface of the mixing switching rod and are respectively matched with an adding valve (9), and the mixing rod comprises a shell connecting rod (10), a supporting connecting rod (11), a shell connecting piece (12), a supporting connecting piece (13), a conducting wire (14), a power supply (15), a switch (16) and a mixing spring (17); the rear end of the shell connecting rod (10) is connected with the groove wall of the containing groove (5), and the front end of the shell connecting rod is internally provided with a mixing adjusting groove (18); the rear end of the supporting connecting rod (11) is matched and arranged in the mixing adjusting groove (18), and the front end of the supporting connecting rod is connected with the test tube supporting sheet (4); the shell connecting piece (12) is a silicon steel sheet and is attached to the bottom of the mixing adjusting groove (18); the support connecting sheet (13) is an iron sheet and is attached to the rear end of the support connecting rod (11); the lead (14) is spirally and uniformly wound on the surface of the shell connecting sheet (12) and is connected with the power supply (15) and the switch (16) to form a loop; the mixing spring (17) is also arranged in the mixing adjusting groove (18), two ends of the mixing spring are respectively connected with the shell connecting piece (12) and the supporting connecting piece (13),
The number of the mixing rods (3) is at least 3, and all the mixing rods (3) share the same power supply (15) and a switch (16),
The switch (16) is a pulse switch and is connected with a pulse generator in an adapting way,
The mixing switching rod comprises an inner transmission rod (19) and an outer switching rod (20) which are arranged inside and outside; one end of the inner transmission rod (19) is provided with a switching motor (21) in a matching way, and transmission bulges are uniformly distributed on the surface of the inner transmission rod (19); the external switching rod (20) is a hollow sleeve rod, is sleeved on the surface of the internal transmission rod (19), and transmission grooves matched with the transmission protrusions are uniformly distributed on the inner side surface.
2. The analysis device for hydrogen peroxide in hydrogen peroxide raffinate according to claim 1, wherein: the adding valve (9) is an electromagnetic valve.
3. The analysis device for hydrogen peroxide in hydrogen peroxide raffinate according to claim 1, wherein: also comprises an analysis platform (22); an analysis groove is uniformly formed in one side of the analysis table (22) along a straight line;
The mixing mechanism is arranged in the analysis tank; the switching adding mechanism is arranged on any side of the analysis table (22) where the analysis groove is in a straight line.
CN202111661045.XA 2021-12-31 2021-12-31 Analysis device for hydrogen peroxide in hydrogen peroxide raffinate Active CN114441517B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111661045.XA CN114441517B (en) 2021-12-31 2021-12-31 Analysis device for hydrogen peroxide in hydrogen peroxide raffinate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111661045.XA CN114441517B (en) 2021-12-31 2021-12-31 Analysis device for hydrogen peroxide in hydrogen peroxide raffinate

Publications (2)

Publication Number Publication Date
CN114441517A CN114441517A (en) 2022-05-06
CN114441517B true CN114441517B (en) 2024-05-24

Family

ID=81365749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111661045.XA Active CN114441517B (en) 2021-12-31 2021-12-31 Analysis device for hydrogen peroxide in hydrogen peroxide raffinate

Country Status (1)

Country Link
CN (1) CN114441517B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212207079U (en) * 2020-03-26 2020-12-22 王青伟 Food additive detection device of solid food
CN113008881A (en) * 2021-03-01 2021-06-22 新疆中泰新鑫化工科技股份有限公司 Online analysis method and device for hydrogen peroxide in raffinate
CN213580824U (en) * 2020-06-15 2021-06-29 临涣焦化股份有限公司 Sampling titration detection device for water quality analysis
CN113218902A (en) * 2021-05-10 2021-08-06 宁波万泽微测环境科技股份有限公司 Online automatic monitoring method and device for residual concentration of hydrogen peroxide
CN113246303A (en) * 2021-04-07 2021-08-13 河南城建学院 Rapid stirring dust-settling device based on CPLD
CN214496515U (en) * 2020-10-16 2021-10-26 青岛广业表面处理有限公司 Electroplating bath with uniform electroplating
CN113551943A (en) * 2020-04-23 2021-10-26 中国石油化工股份有限公司 System and method for monitoring hydrogen peroxide concentration in raffinate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212207079U (en) * 2020-03-26 2020-12-22 王青伟 Food additive detection device of solid food
CN113551943A (en) * 2020-04-23 2021-10-26 中国石油化工股份有限公司 System and method for monitoring hydrogen peroxide concentration in raffinate
CN213580824U (en) * 2020-06-15 2021-06-29 临涣焦化股份有限公司 Sampling titration detection device for water quality analysis
CN214496515U (en) * 2020-10-16 2021-10-26 青岛广业表面处理有限公司 Electroplating bath with uniform electroplating
CN113008881A (en) * 2021-03-01 2021-06-22 新疆中泰新鑫化工科技股份有限公司 Online analysis method and device for hydrogen peroxide in raffinate
CN113246303A (en) * 2021-04-07 2021-08-13 河南城建学院 Rapid stirring dust-settling device based on CPLD
CN113218902A (en) * 2021-05-10 2021-08-06 宁波万泽微测环境科技股份有限公司 Online automatic monitoring method and device for residual concentration of hydrogen peroxide

Also Published As

Publication number Publication date
CN114441517A (en) 2022-05-06

Similar Documents

Publication Publication Date Title
CN206583802U (en) Miniature full-automatic chemical luminescence detector
CN110146712B (en) Rotary sampling miniature turntable type full-automatic luminous immunoassay system
CN114441517B (en) Analysis device for hydrogen peroxide in hydrogen peroxide raffinate
CN103645451A (en) Low field nuclear magnetic resonance probe based on printed circuit board helmholtz coil
CN221062327U (en) Diluting cabinet for high-concentration liquid detection
CN106008389A (en) Cu<2+> fluorescent probe based on benzoxazole structure and preparation method thereof
CN104914102A (en) Micro-fluidic chip and applications thereof
CN208109771U (en) A kind of laboratory COD automatically analyzes robot
CN111451957A (en) Reversible micro-fluidic chip anchor clamps
CN110161002A (en) A kind of ratio fluorescence imaging system and its construction method, application
CN216646528U (en) High-flux biological resistance sensing measuring device based on insulating microsphere state change
CN104964967A (en) Method for detecting aniline in water sample by using chemiluminescence reagent
CN201497725U (en) Controllable temperature electrolytic cell
CN108426938A (en) A kind of direct bioelectrode analytical equipment and analysis method for zymotic fluid detection
CN210487373U (en) High-flux detection sample injector
CN220920080U (en) Iron-based nanocrystalline magnetic core performance detection device
CN217855806U (en) Make things convenient for fixed water bath constant temperature oscillator of test tube
CN207742213U (en) A kind of autosampler based on kit
CN208224158U (en) A kind of direct bioelectrode analytical equipment for fermentation liquid detection
CN218956469U (en) Fiber pH detection device
CN215493634U (en) Culture plate frame device of full-automatic enzyme immunoassay instrument
CN221667612U (en) Copper ion short-term test probe box
CN217639428U (en) External rotor electric machine test fixture
CN110818616B (en) Fluorescent probe for identifying thiocyanate radical and preparation method and detection method thereof
CN202649259U (en) Multi-point contact umbrella-type probe assembly

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant