CN101778980A - Roof window with air supply channel - Google Patents
Roof window with air supply channel Download PDFInfo
- Publication number
- CN101778980A CN101778980A CN200880021760A CN200880021760A CN101778980A CN 101778980 A CN101778980 A CN 101778980A CN 200880021760 A CN200880021760 A CN 200880021760A CN 200880021760 A CN200880021760 A CN 200880021760A CN 101778980 A CN101778980 A CN 101778980A
- Authority
- CN
- China
- Prior art keywords
- baffle plate
- air
- passage
- edge
- window
- 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.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 13
- 239000013536 elastomeric material Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D13/0325—Sky-lights; Domes; Ventilating sky-lights provided with ventilating means
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/04—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses with ventilation wings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/18—Air-flow control members, e.g. louvres, grilles, flaps or guide plates specially adapted for insertion in flat panels, e.g. in door or window-pane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/10—Weather information or forecasts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Architecture (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Air-Flow Control Members (AREA)
- Window Of Vehicle (AREA)
Abstract
A roof window consisting of a window frame (1) and a sash (2) turning about a horizontal axis, provided with an air supply channel (4) with automatic flow rate adjustment of air flowing through the channel (4), the channel (4) being made inside an element of the window frame (1), the means adjusting the automatic air flow rate being arranged inside the channel (4) cut inside the window frame (1), and the baffle (5) set inside the channel (4) being deflected by the flowing air and returning to its initial position by reflexive elastic force.
Description
Technical field
Theme of the present invention is a kind of skylight with the air supply channel in the upper element that is arranged in window frame, it is characterized in that regulating automatically the air-flow by this passage.
Background technology
The sash that existing known skylight has window frame and rotates around horizontal axis.Be formed with air supply channel in the upper element of window frame, this air supply channel is to utilize the band of suitably bonding milling to form.Be positioned at the outside of window to the inlet of this passage, and export in the inboard.The longitudinal edge of inlet opening and the longitudinal edge of exit opening are parallel to the edge of the upper element of window frame, and the width of their length decision air supply channel, and the length of air supply channel is by the distance decision between inlet opening and the exit opening.
The air that flows through passage is discharged from from the space that the tabular hardware of die mould is blocked, and this hardware is protected whole window frame and closely cooperated with the flange that the skylight is connected to the roof.The tabular hardware protection of this die mould window is not subjected to atmospheric effect, not influenced by rainwater.The exit opening of passage is provided with ventilation fence, makes that the air-flow in the manual adjustments inlet chamber becomes possibility.
She Ji air duct satisfies under the normal condition needs of taking a breath in (that is, when the pressure differential of window both sides is no more than some Pa units) apratment building and the public building like this.Under atmospheric conditions situation jumpy, particularly under the situation of violent storm, when the barometric gradient on the window surpassed some Pa, a large amount of cold airs entered and make us unhappy, especially at heating season.In addition, the heavy showers on the glass window produces the water smoke layer, and this water smoke layer can be imported into indoor by passage.When such situation was in vogue, the house user can manually reduce the air capacity that flows into inside, regulated the ventilation fence that is positioned at channel outlet.
Known a kind of air collector that is installed on window frame or the sash from application PL-P 334669.It is made up of the flow regulator of air inlet port that is fixed to the window external surface and manually setting, and this flow regulator is installed in the inboard of window element.Between air inlet port and adjuster, has the passage in the window element of being formed on.This air inlet port has the arch occlusion part, is enclosed in the air intake side by the plate-shape metal net.Have baffle plate in air inlet port inside, this baffle plate is suspended in the outside of window element by its top edge below the feeder connection opening, freely hang down by gravity.Occlusion part is owing to the pressure differential on its two sides is rotated, and this can change the width of seam.According to atmospheric conditions, occlusion part adopts such position: the air of constant flows through this air inlet port in the unit interval, flows through the passage that is formed in the window element then.In the inboard of window, this passage is provided with manual flow regulator, and this adjuster makes the house user can manual adjustments flow into the amount of air, and adjustable range reaches from being opened to complete closing passage outlet fully.
Described air collector is the optional equipment of window, and it can not be used for the skylight under the situation of window arrangement not being carried out sizable modification.The skylight is blocked by the shield element of moulding at its external surface, and described shield element closely cooperates with the flange that window and roof lid is connected; The add ons that in flange, does not also have space mounting air inlet port form.In addition, because the skylight is arranged on the roof with various inclination angles, therefore air inlet port with freely-suspended baffle plate (it adopts initial position under action of gravity) is installed can need to make many air collector types with different structure parameter, to realize the feature at air given inclination angle stream, that be suitable for the skylight by each gatherer.
According to DE 19929133, the also known window made from plastics is equipped with the ventilation fan between frame elements and sash frame, and this ventilation fan is installed in the attaching space that is limited by two seals that is provided with for this purpose.This ventilation fan is by the surface of screw to the upper element of window frame, and forms air chamber between sash frame surface and ventilation fan diapire.At the air intake seam place of this air chamber, on the side member of ventilation fan, has swing airflow limitation device.This limiter is the streamlined curved baffle that is connected with counterweight.When the pressure differential of window both sides hour, this counterweight is arranged on the fully open position by gravity with baffle plate.Yet when the pressure differential on window two sides increases so that air-flow when overcoming the gravity of described counterweight, baffle plate turns to the diapire of ventilation fan and the seam of the air intake of air chamber is narrowed down, the restriction airflow rate.When the pressure differential on window two sides reduced, the baffle plate of flow restrictor returned to initial position by gravity.
Can not be applied to be installed in skylight on the roof according to the ventilation fan of DE 19929133 with various inclination angles, because the flow restrictor that adopts home position will not be owing to the gravity reason will can suitably be worked, as according to the situation of the air collector of applying for PL-P 334669.In addition, adopt according to the enough big space that limits by two seals between the ventilation fan needs frame elements of DE 19929133 and the sash frame element.Yet, in the skylight, do not have other element to insert wherein to such an extent as to the space between the described seal is too little.
Summary of the invention
The purpose of this invention is to provide a kind of skylight with air supply channel of the upper element inside that is formed on window frame, wherein, current rate is regulated automatically by the mechanism that is positioned at this channel interior, makes that airflow rate is optimized, and irrelevant with atmospheric conditions at that time.
The sash that skylight with air supply channel according to the present invention has window frame and rotates around horizontal axis.Have air supply channel in the upper element of window frame, its inlet opening is in the outside of window, and exit opening is in the inboard of window.The longitudinal edge of inlet opening and exit opening is parallel to the longitudinal edge of upper window frame element, and the width of their length decision air supply channel, and the distance between the entrance and exit is the length of air supply channel.
Be provided with baffle plate in channel interior, this baffle plate be attached to inner surface of passage by a longitudinal edge and with another longitudinal edge towards the air intake that leads to passage.The length of the longitudinal edge of this baffle plate equals the width of this air supply channel at least, and longer than short baffle edge ratio and the spacing between the close-fitting channel inner surface of described baffle edge.This baffle plate is installed in this channel interior, makes this baffle plate can turn back to its initial position by means of elasticity from returning power.
By the pressure differential between the air-flow increase baffle plate both sides of air supply channel.When the power that produces by this pressure differential surpass baffle plate return power certainly the time, baffle plate leaves the opposite inner face that fixed surface is shifted to passage, makes the gap turn narrow of gas channel.Air velocity is big more, and then the pressure differential of baffle plate both sides is high more, and baffle plate is big more towards the degree of skewness of the relative wall of passage.For fear of closing fully of air supply channel, this baffle plate should not be in the relative wall that adheres to passage on the whole length at movable edge.This can be by the movable longitudinal edge realization of using separator or passing through the suitable shaping of baffle plate.The variation and the air velocity in air duct gap are inversely proportional to, and therefore, even when gas supply flow is very strong, airflow rate also keeps constant and optimization.
Description of drawings
Be presented among the embodiment shown in the drawings in skylight according to the present invention.First embodiment is shown in Figure 1, and Fig. 1 illustrates the cross section that runs through window upper element and gas channel; Fig. 2 illustrates the window frame with the not capping inlet that leads to gas channel; The cross section of gas channel and the cross section that runs through gas channel when this EDGE CONTACT separator are run through in position when Fig. 3 and Fig. 4 are illustrated in movable baffle edge and are attached to conduit wall.
Second embodiment of window is presented among Fig. 5, and Fig. 5 illustrates the cross section that runs through window upper element and air duct; Fig. 6 illustrates the window frame with the not capping inlet that leads to this passage, and Fig. 7 is diagrammatic sketch element, passage and the section that runs through the limiting channel width; Fig. 8 is the view and the section of the position passage when movable baffle edge is attached to separator; Fig. 9 illustrates the shape of baffle plate.
The specific embodiment
Example I
The sash 2 that described skylight with air supply channel has window frame 1 and rotates around horizontal axis, this air supply channel is equipped with the mechanism that the airflow rate by this passage is automatically adjusted.Between window frame 1 and sash 2, seal 3 is installed.Upper window frame element 1 inside has passage 4, and its inlet aperture arrangement is in the outside of window, and exit opening is arranged in the window inboard.The longitudinal edge of inlet opening and exit opening is parallel to the longitudinal edge of upper window frame element, and the width of their length decision air supply channel 4, and the length of air supply channel 4 is by the distance decision between inlet opening and the exit opening.
The air that flows through this passage produces pressure differential in the both sides of baffle plate 5.Be wide enough so that when pressure differential increases to the power that acts on the baffle plate 5 rises to above it when returning power, the movable edge B of baffle plate 5 shrinks the air flue seam towards surperficial 7 deflections.When intake velocity further rose, the edge B of baffle plate 5 was attached to the surface 7 between the separator 8 then at first against on the separator 8.Under limiting case, the edge B of baffle plate 5 almost all is attached on the surface 7, at the only remaining very little air flue seam in the place, side of separator 8.When the pressure differential on the baffle plate 5 reduced, baffle plate 5 was owing to begin to turn back to its initial position from the power of returning.
Example II
The sash 2 that described skylight with air supply channel has window frame 1 and rotates around horizontal axis, this air supply channel is equipped with the mechanism that the airflow rate by this passage is automatically adjusted.Between window frame 1 and sash 2, seal 3 is installed.Have passage 4 in the inside of upper window frame element 1, its inlet aperture arrangement is in the window outside, and exit opening is arranged in the window inboard.The longitudinal edge of inlet opening and exit opening is parallel to the longitudinal edge of upper window frame element, and the width of their length decision air supply channel 4, and the length of air supply channel 4 is by the distance decision between inlet opening and the exit opening.
The air that flows through this passage produces pressure differential in the both sides of baffle plate 5, and baffle plate 5 is owing to produce elasticity from returning power by wedge 12 with the surface 6 that holding member 10 is pressed into passage 4.Be wide enough so that when this pressure differential increases to the power that acts on the baffle plate 5 rises to above it when returning power, the edge B of baffle plate 5 shrinks the air flue seam towards the surface of passage 47 deflections.When intake velocity further rose, the movable edge B of baffle plate 5 was attached to the surface 7 between the separator 8 then at first against on the separator 8.Under limiting case, the edge B of baffle plate 5 almost all is attached on the surface 7, at the only remaining very little air flue seam in the place, side of separator 8.When the pressure differential on the baffle plate 5 reduced, baffle plate 5 was owing to begin to turn back to its initial position from the power of returning.
Claims (7)
1. skylight with the air supply channel in the upper element that is arranged in window frame, the inlet opening of this air supply channel is in the outside of window, exit opening is in the inboard of window, it is characterized in that, be provided with baffle plate (5) in the inside of described passage (4), this baffle plate (5) is because air-flow and deflection and turn back to its initial position from returning power by its elasticity, and the inner surface of the edge of described baffle plate (5) and described passage (4) closely cooperates, and movable baffle plate (5) is according to the airflow rate of atmospheric conditions adjusting by described passage (4).
2. skylight according to claim 1 is characterized in that, described baffle plate (5) is made by elastomeric material.
3. skylight according to claim 2 is characterized in that, described baffle plate (5) is connected with an inner surface of described passage (4) by the surperficial band of edge (A) along the longitudinal, and its longitudinal edge (B) is towards the air intake side.
4. skylight according to claim 2, it is characterized in that, the longitudinal edge (A) of described baffle plate (5) is arranged in the groove (11), this groove (11) is formed in the inner surface of described passage (4), and the longitudinal edge (B) of described baffle plate (5) is towards the air intake side, described baffle plate (5), the end of the both sides of (B) is provided with holding member (10) at the edge, described holding member (10) is forced into the inner surface with described groove (11) of described passage (4) by wedge (12), and described edge (B) separates by horizontal cut and described holding member (10).
5. according to claim 3 or 4 described skylights, it is characterized in that described baffle plate (5) is attached to inwall described passage (4), that be connected with baffle plate (5) by its edge (B), and stretch out the bottom margin that surpasses described passage (4) inlet opening.
6. according to claim 3 or 4 described skylights, it is characterized in that described air supply channel (4) is provided with separator (8), the longitudinal edge (B) of described baffle plate (5) because air flowing and during by deflection and described separator (8) closely cooperate.
7. skylight according to claim 1 is characterized in that, the exit opening of described passage (4) is blocked by ventilation fence (9), and the speed that makes manual adjustments flow into air becomes possibility.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL382324A PL217419B1 (en) | 2007-04-27 | 2007-04-27 | Roof window with air inlet channel |
PLP382324 | 2007-04-27 | ||
PCT/PL2008/050007 WO2008133539A2 (en) | 2007-04-27 | 2008-04-26 | Roof window with air supply channel |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101778980A true CN101778980A (en) | 2010-07-14 |
Family
ID=39832467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200880021760A Pending CN101778980A (en) | 2007-04-27 | 2008-04-26 | Roof window with air supply channel |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2150658B1 (en) |
CN (1) | CN101778980A (en) |
AT (1) | ATE517217T1 (en) |
PL (1) | PL217419B1 (en) |
WO (1) | WO2008133539A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107002456A (en) * | 2014-12-02 | 2017-08-01 | Vkr控股公司 | Overhead device for roof window |
CN110945204A (en) * | 2017-07-21 | 2020-03-31 | Vkr控股公司 | Roof window system with improved transition between roof window and ventilation assembly |
CN113123538A (en) * | 2019-12-30 | 2021-07-16 | Vkr控股公司 | Roof window system having a ventilation unit mounted adjacent to a roof window, and method of providing ventilation to a building |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL2317026T3 (en) | 2009-11-02 | 2012-11-30 | Vkr Holding As | Ventilation device and roof window system |
DK180106B1 (en) * | 2012-01-13 | 2020-05-05 | Vkr Holding A/S | A window having interchangeable interface means and a method of providing a window |
PL228158B1 (en) | 2013-02-04 | 2018-02-28 | Fakro Pp Społka Z Ograniczoną Odpowiedzialnością | Window set, in particular roof window, with the fresh air diffuser |
PL232397B1 (en) | 2013-02-04 | 2019-06-28 | Fakro Pp Spolka Z Ograniczona Odpowiedzialnoscia | Window with diffuser |
DK178249B1 (en) | 2013-05-29 | 2015-10-05 | Vkr Holding As | A roof window with a water diversion member |
EP2813632B1 (en) * | 2013-06-14 | 2018-02-21 | Roto Frank Ag | Roof-light |
PL222809B1 (en) * | 2014-03-20 | 2016-09-30 | Ćwikilewicz Marek Brevis Spółka Cywilna | Air intake ventilator |
PL228495B1 (en) | 2014-05-30 | 2018-04-30 | Fakro Pp Spolka Z Ograniczona Odpowiedzialnoscia | Roof slope window with air supply duct |
PL441211A1 (en) | 2022-05-18 | 2023-11-20 | Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością | Window frame with air supply duct |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL113128B1 (en) | 1976-11-24 | 1980-11-29 | Zaklady Wytworcze Aparatury Wy | Motor and spring drive for high voltage breakers |
DE8623864U1 (en) * | 1986-09-05 | 1986-12-18 | Hüls Troisdorf AG, 53840 Troisdorf | Windows with ventilation |
DE19610428C2 (en) * | 1996-03-16 | 2000-07-06 | Huels Troisdorf | Ventilated window |
AU2827699A (en) * | 1998-04-07 | 1999-10-25 | Velux Industri A/S | A roof window with a ventilating frame top member |
DE19929133C2 (en) | 1998-06-25 | 2001-06-28 | Christel Becks | Plastic window made of sash and frame |
DE10209696A1 (en) * | 2002-03-06 | 2003-09-18 | Kbe Profilsysteme Gmbh | Forced ventilation window with airflow limitation |
DE102005006010A1 (en) | 2005-02-10 | 2006-08-24 | Rehau Ag + Co. | Frame assembly and air flow limiting device for this purpose |
DE202006004712U1 (en) * | 2006-03-22 | 2006-06-22 | Aluplast Gmbh | Window or door with ventilation |
-
2007
- 2007-04-27 PL PL382324A patent/PL217419B1/en unknown
-
2008
- 2008-04-26 AT AT08753862T patent/ATE517217T1/en not_active IP Right Cessation
- 2008-04-26 WO PCT/PL2008/050007 patent/WO2008133539A2/en active Application Filing
- 2008-04-26 EP EP08753862A patent/EP2150658B1/en active Active
- 2008-04-26 CN CN200880021760A patent/CN101778980A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107002456A (en) * | 2014-12-02 | 2017-08-01 | Vkr控股公司 | Overhead device for roof window |
CN107002456B (en) * | 2014-12-02 | 2018-10-12 | Vkr控股公司 | Overhead device for roof window |
CN110945204A (en) * | 2017-07-21 | 2020-03-31 | Vkr控股公司 | Roof window system with improved transition between roof window and ventilation assembly |
CN110945204B (en) * | 2017-07-21 | 2022-01-11 | Vkr控股公司 | Roof window system with improved transition between roof window and ventilation assembly |
CN113123538A (en) * | 2019-12-30 | 2021-07-16 | Vkr控股公司 | Roof window system having a ventilation unit mounted adjacent to a roof window, and method of providing ventilation to a building |
US11834832B2 (en) | 2019-12-30 | 2023-12-05 | Vkr Holding A/S | Roof window system with a ventilation unit mounted adjacent to the roof window, and a method of providing ventilation for a building |
Also Published As
Publication number | Publication date |
---|---|
PL382324A1 (en) | 2008-11-10 |
EP2150658B1 (en) | 2011-07-20 |
EP2150658A2 (en) | 2010-02-10 |
WO2008133539A2 (en) | 2008-11-06 |
PL217419B1 (en) | 2014-07-31 |
WO2008133539A3 (en) | 2009-03-26 |
ATE517217T1 (en) | 2011-08-15 |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100714 |