CN201543133U - Bracket mask - Google Patents
Bracket mask Download PDFInfo
- Publication number
- CN201543133U CN201543133U CN2009202744186U CN200920274418U CN201543133U CN 201543133 U CN201543133 U CN 201543133U CN 2009202744186 U CN2009202744186 U CN 2009202744186U CN 200920274418 U CN200920274418 U CN 200920274418U CN 201543133 U CN201543133 U CN 201543133U
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- support
- face shield
- bow
- mask
- mouth mask
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- Expired - Fee Related
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Abstract
The utility model relates to a bracket mask. A mask is of an up and down parallel structure. The mask is provided with at least one horizontal folding part in parallel with the upper and lower sides. The horizontal folding part is planished. Only two left and right ends of the horizontal folding part are welded or sewed with a main plane of the mask into one body. The upper and lower sides of the mask are both provided with inward flanged edges. The left and right sections of the flanged edges are welded or sewed with the main plane of the mask into one body. The middle one or more sections are not welded to form the openings. Upper and lower ends of a bow-shaped bracket are respectively clamped in an upper flanged edge opening and a lower flanged edge opening of the mask. The horizontal folding part in the middle of the mask is opened by the bow-shaped bracket and protrudes outwards to form a space protruding outwards between the mouth and the nose of the wearer so as to be convenient for the wearer to open mouth to speak and also reduce moist, mugginess and friction uncomfortable for the wearer. After being used, the bracket can be conveniently taken out and can be conveniently arranged in the next novel mask to be repeatedly used. The bracket mask not only keeps high production efficiency and low cost, but also improves the wearing comfort degree and the effectiveness.
Description
Affiliated technical field
The utility model relates to a kind of mouth mask, especially a kind of mouth mask that the detachable bow-shaped support is housed.
Background technology
At present, known mouth mask can be divided into 4 kinds substantially, and the first kind is the most traditional flat, and is big because of its area, be eliminated gradually with the face defective such as bad of fitting; Second class is protruding cup type (being commonly called as the hog snout formula) structure, because its production efficiency is low, cost is high, and volume is excessive not portable etc. not enough, is not widely used; The 3rd class is the present most popular rectangular multilayer non-woven fabrics gauze mask that has horizontal folding on the market, this mouth mask has that volume is little, cost is low, the production efficiency advantages of higher, but be close to mouth and nose because of its inner surface, easily cause friction and damp and hot, the wearer is felt under the weather; The 4th class is the flat-folded mouth mask (being commonly called as the Duckbill type mouth mask) of Minnesota Mining and Manufacturing Company's invention, and volume is little portable, and comfortable wearing is effective, but the third also manufactures difficulty relatively, the high deficiency of cost, and expensive price has also limited its scope of application.
Summary of the invention
In order to overcome the problems referred to above, the utility model provides a kind of support mouth mask, combines the advantage of above-mentioned third and fourth two classes mouth mask, has overcome its corresponding deficiency again.
The technical scheme that its technical problem that solves the utility model adopts is: face shield is parallel construction up and down, at least one horizontal folding parallel with last bottom is arranged on the face shield, all there is inside flange on upper and lower two limits of face shield, this flange left and right two sections with face shield principal plane welding or be stitched into one, placed in the middle one or more snippets do not weld and forms described upper overturning opening and following flange opening, the upper and lower end of bow-shaped support is stuck in face shield upper overturning opening and the following flange opening, and the horizontal folding in the middle of the face shield is strutted by bow-shaped support and outwards protrudes.Be stuck in the identical sealing that the bow-shaped support in the face shield can not only solve face shield and the wing of nose and chin effectively, can also form a space of outwards protruding between mouth and nose, be convenient to the wearer and open one's mouth in a minute, minimizing simultaneously is moist, sultry and make us uncomfortable friction.This support can take out easily and be contained in easily after use in the next new face shield and reuse.
Bow-shaped support adopts plastically deformable to have the material (such as sheet metal, wire or be surrounded by plastic tape wiry etc.) of enough rigidity to manufacture again, described " plastically deformable has enough rigidity again ", be meant that the wearer can free-handly make the support plastic deformation under the situation of tool using not, support after the setting has enough rigidity again in wearing process, that is to say, only can strain take place and plastic deformation can not take place at the process medium-height trestle of wearing.
From forward, cantilever tip has the wing limit wideer than the support stile, the first half is T font or Y font or ∏ font, it is wide at the top and narrow at the bottom I-shaped that integral body is, have in light weight, material saving, easily bending typing and be convenient to install advantage such as location, flat and support upper limb limit broad is equal to the nose clip effect, play better sealing function thereby help its shape adjustments with the wing of nose shape that is fit to different people, the support bottom wing limit of relative narrower then is beneficial to mounting or dismounting.If launching planar design, support become trapezoidal, " returning " font or " greatly " not coming out font also can realize similar effect, just effect is relatively poor, preferably the developed plantform shape of whole bow-shaped support is T font or Y font or ∏ font, more preferably is I shape wide at the top and narrow at the bottom.
From side direction, the bow-shaped support left side is to (the shape that is the three sections distributions in upper, middle and lower when user mode, the support stage casing line of two inflection points up and down is the camber line of vertical curve or slight lordosis substantially, upper and lower section of support is respectively to angle of invagination, all bending parts have circular arc excessive, and the side direction that the support upper, middle and lower are three sections can be that straight line also can be camber line and their combination.
In a preferred embodiment, the length of run that the support upper, middle and lower are three sections respectively accounts for about 1/3rd of length overall, preferably the support epimere is to invagination 10～60 degree, better angle is 30～40 degree, coincide with the side direction oblique line of the bridge of the nose, preferably the support hypomere is to invagination 20～70 degree, and better angle is 40～50 degree, curve an arcuation near the lower end, match with the side direction curve of chin.
Bow-shaped support is preferably flat before use, be beneficial to packing, transport and carry, its height is greater than the face shield height that does not launch and smaller or equal to the face shield height after launching fully, and after the support of bow was packed in the face shield, the horizontal folding in the middle of the face shield was strutted by bow-shaped support and outwards protrudes.The stile side direction of bow-shaped support can also have N font support stile folding so that regulate support height when using, launch this N font support stile folding after, the expansion of bow-shaped support highly allows greater than the face shield height after launching fully.The preferred values of the expansion height of support is 100 millimeters to 200 millimeters, and better expansion highly is 130 millimeters to 160 millimeters.
The folding crease direction of height, width and the face shield of product when described " highly ", " width " and " level " all refer to from wearer's top view.
Described " when user mode support left side to be the three sections distributions in upper, middle and lower (shape ", be meant left hand one side that stands in the wearer, observe the summary description of the support shape of wearer's side seeing.
Described " support upper limb limit " is meant that support snaps in the face shield upper overturning opening and has the part of lateral extension, the wing limit of cantilever tip both can be contour or not contour thin slice, also can be circular or non-circular wire, preferably the height on support upper limb limit is not more than face shield upper overturning height, and more preferably the height on support upper limb limit is not more than the formed inner chamber height in face shield upper overturning weld zone.
Described " support bottom wing limit " is meant that support snaps in the flange opening under the face shield and has the part of lateral extension, when the width on support bottom wing limit equals the width of support stile or when the support stile be multiple hull construction and when not connecting in the lower end, described " support bottom wing limit " is meant that support snaps in the part in the flange opening under the face shield.
Described " support stile " is meant the support remainder except that support upper limb limit and support bottom wing limit, the support stile comprises support epimere, support stage casing and support hypomere, when user mode, should " support stile " be to see from the front to be erect configuration, see from the side then to be arc.The support stile both can be that monomer also can be a multiple hull construction, if multiple hull construction, then support stile width is meant the summation of a plurality of support stile width.
Horizontal folding on the face shield is cut the cross section and is seen as flat N font or edge-on and flat Ω font from perpendicular, should folding be driven plain, and only in the welding of left and right two ends and face shield principal plane or sew up and be one, during use in the middle of the face shield not the horizontal folding of welding portion can draw back up and down.
Described " pressing " is meant horizontal folding carried out roll extrusion, it is flushed with the face shield principal plane substantially.
The upper and lower flange back boxing of face shield and face shield has filter medium, and inside and outside all have a cover layer, preferably do not have filter medium in the upper and lower flange of face shield, interior outer cover only arranged or outer cover is only arranged.
In a preferred embodiment, the upper and lower flange of face shield is enough big, can shelter from bigger a part of support preferably, thus the sense of discomfort of avoiding support directly to contact skin being caused.
It is to help realizing that continuous rolling manufactures that face shield adopts up and down the benefit of parallel construction, and efficient is high, preferably adopts nonwoven fabric of synthetic fibre to make face shield, can utilize the ultrasonic continuous welding of rolling, and raises the efficiency.Preferably two ends, the face shield left and right sides are vertical shape (being common rectangle mouth mask), are convenient to continuous rolling and cut off, and corresponding hobboing cutter is simple and easy to system, and is with low cost.
Fixed band welding or stitching are convenient to the wearer and are fastened face shield at the face shield two ends, fixedly have various ways such as ear band, headband and bandage, preferably adopt the elastic reducing-fixing band of chemical fibre braiding, can fixed band be welded on the face shield with ultrasonic wave.
Though the utility model has preferably increased the support cost, but support can substitute original nose clip, and can reuse, so totle drilling cost common relatively " the rectangular multilayer non-woven fabrics gauze mask that has horizontal folding " do not increase, and is greatly improved yet wear effect.
The beneficial effects of the utility model are: both kept production high efficiency, low cost, improved comfortable wearing degree and validity again.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the forward internal view of first embodiment of the utility model when being unkitted support and horizontal folding and not opening.
Fig. 2 is the cutaway view in Figure 1A-A cross section.
Fig. 3 is the flat support forward view during bending state not among first embodiment of the utility model.
Fig. 4 be among Fig. 3 the left side after the bending of flat support to view.
Fig. 5 is the forward internal view after packing into bow-shaped support shown in Figure 3 in the face shield shown in Figure 1.
Fig. 6 is that left side after packing into bow-shaped support shown in Figure 4 in the face shield shown in Figure 1 is to view.
Fig. 7 is the forward internal view after second embodiment of the utility model is equipped with support and horizontal folding and opens.
Fig. 8 is the perpendicular cutaway view of cutting the cross section of horizontal folding among the 3rd embodiment of the utility model.
Fig. 9 is the three-dimensional view behind the bow-shaped support bending forming among the 3rd embodiment of the utility model.
Figure 10 is the three-dimensional view behind the bow-shaped support bending forming among the 4th embodiment of the utility model.
1. face shield principal planes among the figure, 2. horizontal folding, 3. upper overturning weld zone, 4. upper overturning opening, 5. fixed band 6. descends the flange weld zone, 7. descend the flange opening, 8. support upper limb limit, 9. support epimere, 10. the support stile is folding, 11. support stage casings, 12. support hypomeres, 13. support bottom wing limit, 14. chin, 15. lips, 16. bridge of the noses.
The specific embodiment
In Fig. 1,3 N font horizontal foldings (2) are as shown in Figure 2 arranged on the face shield, this horizontal folding is driven plain, and only on a left side, right two ends and face shield principal plane (1) welding or stitching are one, on the face shield, all there is inside flange on following two limits, the left side of this flange, two sections on the right side and the welding of face shield principal plane or stitching form upper overturning weld zone (3) and following flange weld zone (6) respectively, one section placed in the middle is not welded and forms upper overturning opening (4) and following flange opening (7) respectively, preferably face shield on, the inside flange in following two limits is enough big, can shelter from metallic support preferably, thereby avoid metallic support directly to contact skin, more preferably go up, there is not filter course in the following flange, in only having, outer cover or outer cover is only arranged, so not only saved material but also be convenient to support and snapped in, about a fixed band (5) welding or stitching are respectively arranged at the face shield two ends.
As shown in Figure 2, all there is inside flange on the upper and lower limit of face shield, and there are 3 N font horizontal foldings (2) left and right two sections and face shield principal plane (1) the welding formation upper overturning weld zone (3) and the following flange weld zone (6) of this flange in the middle of the face shield.
As shown in Figure 3, described support adopts plastically deformable to have the material (such as sheet metal) of enough rigidity to manufacture again, preferably the support forward is wide at the top and narrow at the bottom I-shaped, have in light weight, material saving and be convenient to advantage such as location, flat and support upper limb limit (8) broad is equal to the nose clip effect, play better sealing function thereby help its shape adjustments with the wing of nose shape that is fit to different people; Support bottom wing limit (13) relative narrower is beneficial to mounting or dismounting, and support integral body then develops into the T font when the width on support bottom wing limit equals the width of support stile.Preferably support is flat before use in the present embodiment, is beneficial to packing, transports and carries.
As shown in Figure 4, during use flat support upper limb limit (8) and support bottom wing limit (13) shown in Figure 3 are stuck on the face shield, in the following flange opening, the side archwise that bends inwards then, from the left side to seeing that support presents, in, (the shape of following three sections distributions, support stage casing (11) line of two inflection points up and down is the camber line of vertical curve or slight lordosis substantially, support epimere (9) is to about 30～40 degree of invagination, coincide with the side direction oblique line of the bridge of the nose (16), support hypomere (12) is to about 40～50 degree of invagination, make the support stile leave suitably distance of wearer's lip (15), and the face shield horizontal folding strutted, curve an arcuation near the lower end, match with the side direction curve of chin (14), all bending parts have circular arc excessive, on the support, in, following three sections side direction can be that straight line also can be camber line and their combination.Preferably the side direction of support stile also has N font support stile to fold (10), can regulate support height to be fit to the shape of face of different size, and more preferably the N font support stile burst of support stile side direction is in the support stage casing, and outwards bending.
As shown in Figure 5, support upper limb limit (8) and support bottom wing limit (13) be stuck in the face shield upper overturning opening (4) and following flange opening (7) in.In the present embodiment preferably the width of face shield upper overturning opening less than the width on support upper limb limit and more than or equal to the width of support stile, the formed inner chamber height in face shield upper overturning weld zone is more than or equal to the height on support upper limb limit, the width of flange opening is less than the width on support bottom wing limit and more than or equal to the width of support stile under the face shield, the formed inner chamber height in flange weld zone is more than or equal to the height on support bottom wing limit under the face shield, so just can be with on the support, the flat wing limit at following two ends is from face shield, following flange opening part inserts on the face shield, the formed inner chamber in following flange weld zone, play better positioning action, this support can take out easily and be contained in easily after use in the next new mouth mask and reuse simultaneously.
As shown in Figure 6, with the shape bending of support upper limb limit (8) according to the wing of nose, with the shape bending of support bottom wing limit (13) according to the front camber line of chin, Ding Xing bow-shaped support can not only solve the identical sealing of face shield and the wing of nose and chin effectively like this, horizontal folding in the middle of the face shield is strutted by bow-shaped support and outwards protrudes simultaneously, between mouth and nose, form a space of outwards protruding, be convenient to the wearer and open one's mouth to speak, reduce moist, sultry simultaneously and make us uncomfortable friction.
As shown in Figure 7, support bottom wing limit (13) atrophy is to wide with the support stile, promptly form half-set, the width of face shield upper overturning opening (4) equals the width on support upper limb limit (8), the width of flange opening (7) equals the width on support bottom wing limit (13) under the face shield, benefit is that the support mounting or dismounting are more convenient like this, is convenient to reuse.
As shown in Figure 8, an edge-on Ω font horizontal folding (2) is arranged on the face shield, this horizontal folding is driven plain, and only in the welding of left and right two ends and face shield principal plane (1) or sew up and be one.
As shown in Figure 9, support adopts the drawing of sheet metal model, preferably the cross section on support upper limb limit (8) and support bottom wing limit (13) is all curved, can solve the identical sealing of face shield and the wing of nose and chin effectively, support epimere (9), the all curved or broken line of all cross sections of support stage casing (11) and support hypomere (12) can improve its rigidity.Present embodiment preferably support has been bent into preferable form in advance, is convenient to the wearer and uses fast.
As shown in figure 10, support employing wire is bent into forward and is the Y font, the support upper limb limit (8) of upper end is a single metal wire, be easy to plastic deformation, with the wing of nose shape of coincideing, remainder can improve the support rigidity for the double joint wire, and the double joint wire connects in the lower end and the slick and sly support bottom wing limit (13) that excessively forms, this example structure is simple, is convenient to manual self-control.
Claims (9)
1. support mouth mask, comprise flat-folded face shield, bow-shaped support and fixed band, it is characterized in that: face shield is parallel construction up and down, at least one horizontal folding parallel with last bottom is arranged on the face shield, all there is inside flange on upper and lower two limits of face shield, and the upper and lower end of bow-shaped support is stuck in face shield upper overturning opening and the following flange opening.
2. support mouth mask according to claim 1 is characterized in that: the horizontal folding of face shield is driven plain, and only in the welding of left and right two ends and face shield principal plane or sew up and be one.
3. support mouth mask according to claim 1, it is characterized in that: left and right two sections and the welding of face shield principal plane or the stitching of face shield upper overturning, placed in the middle one or more snippets do not weld and forms described upper overturning opening, left and right two sections and the welding of face shield principal plane or the stitching of flange under the face shield, one or more snippets does not weld and forms described flange opening down between two parties.
4. support mouth mask according to claim 1 is characterized in that: the upper and lower flange back boxing of face shield and face shield has filter medium, and inside and outside all have a cover layer.
5. support mouth mask according to claim 1 is characterized in that: do not have filter medium in the upper and lower flange of face shield, interior outer cover is only arranged or outer cover is only arranged.
6. support mouth mask according to claim 1, it is characterized in that: bow-shaped support adopts plastically deformable to have the material of enough rigidity to manufacture again, from forward, cantilever tip has the wing limit wideer than the support stile, the first half is T font or Y font or ∏ font, the support left side is to presenting when user mode, in, (the shape of following three sections distributions, the support stage casing line of two inflection points up and down is the camber line of vertical curve or slight lordosis substantially, on the support, hypomere is respectively to angle of invagination, all bending parts have circular arc excessive, on the support, in, following three sections side direction can be that straight line also can be camber line and their combination.
7. support mouth mask according to claim 1, it is characterized in that: bow-shaped support is flat before use, its height is greater than the face shield height that does not launch and smaller or equal to the face shield height after launching fully, after packing in the face shield by the support of the instant bow of wearer, the horizontal folding in the middle of the face shield is strutted by bow-shaped support and outwards protrudes.
8. support mouth mask according to claim 1, it is characterized in that: bow-shaped support is bending or by the mould punch forming in advance before use, it launches height greater than the face shield height that does not launch and smaller or equal to the face shield height after launching fully, after bow-shaped support was packed in the face shield, the horizontal folding in the middle of the face shield was strutted by bow-shaped support and outwards protrudes.
9. support mouth mask according to claim 1 is characterized in that: the stile side direction of bow-shaped support has N font support stile folding, launch this N font support stile folding after, the expansion of bow-shaped support highly allows greater than the face shield height after launching fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202744186U CN201543133U (en) | 2009-11-23 | 2009-11-23 | Bracket mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202744186U CN201543133U (en) | 2009-11-23 | 2009-11-23 | Bracket mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201543133U true CN201543133U (en) | 2010-08-11 |
Family
ID=42598291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202744186U Expired - Fee Related CN201543133U (en) | 2009-11-23 | 2009-11-23 | Bracket mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201543133U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533990A (en) * | 2011-04-08 | 2014-01-22 | 尤妮佳股份有限公司 | Mask |
| CN103830980A (en) * | 2014-03-21 | 2014-06-04 | 吕晓莉 | Efficient haze filtering nuclear pore membrane filter and efficient haze filtering nuclear pore membrane respirator |
| CN105473192A (en) * | 2013-08-29 | 2016-04-06 | 3M创新有限公司 | Filtering face-piece respirator having darted mask body |
| CN105492084A (en) * | 2013-08-29 | 2016-04-13 | 3M创新有限公司 | Filtering face-piece respirator with stiffening member integral with filtering structure |
| JP2018500979A (en) * | 2014-12-04 | 2018-01-18 | スリーエム イノベイティブ プロパティズ カンパニー | Flat folding respirator |
| CN111869953A (en) * | 2020-07-03 | 2020-11-03 | 深圳爱灵特思科技有限公司 | Children's gauze mask that light and temperature sense discolours |
| CN112890960A (en) * | 2021-01-20 | 2021-06-04 | 北京爱奇尔白依科技有限公司 | Ophthalmic hole towel |
| CN114390899A (en) * | 2020-08-14 | 2022-04-22 | 割方裕壮 | Mask support and method of using same |
| CN114711488A (en) * | 2021-01-06 | 2022-07-08 | 谢东宏 | Gauze mask |
| US11413481B2 (en) | 2015-05-12 | 2022-08-16 | 3M Innovative Properties Company | Respirator tab |
| TWI783642B (en) * | 2021-08-20 | 2022-11-11 | 林弋航 | Mask and inner cover thereof |
| US11813581B2 (en) | 2017-07-14 | 2023-11-14 | 3M Innovative Properties Company | Method and adapter for conveying plural liquid streams |
| US11877604B2 (en) | 2007-05-03 | 2024-01-23 | 3M Innovative Properties Company | Maintenance-free respirator that has concave portions on opposing sides of mask top section |
| US11904191B2 (en) | 2007-05-03 | 2024-02-20 | 3M Innovative Properties Company | Anti-fog respirator |
| US12064651B2 (en) | 2010-08-31 | 2024-08-20 | Crosstex International, Inc. | Filter mask having one or more malleable stiffening members |
-
2009
- 2009-11-23 CN CN2009202744186U patent/CN201543133U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11877604B2 (en) | 2007-05-03 | 2024-01-23 | 3M Innovative Properties Company | Maintenance-free respirator that has concave portions on opposing sides of mask top section |
| US11904191B2 (en) | 2007-05-03 | 2024-02-20 | 3M Innovative Properties Company | Anti-fog respirator |
| US12064651B2 (en) | 2010-08-31 | 2024-08-20 | Crosstex International, Inc. | Filter mask having one or more malleable stiffening members |
| CN103533990A (en) * | 2011-04-08 | 2014-01-22 | 尤妮佳股份有限公司 | Mask |
| CN103533990B (en) * | 2011-04-08 | 2016-09-07 | 尤妮佳股份有限公司 | Mouth mask |
| CN105492084B (en) * | 2013-08-29 | 2019-09-06 | 3M创新有限公司 | Filtering face-piece respirator with the rigid member being integrally formed with filter structure |
| CN105473192B (en) * | 2013-08-29 | 2019-09-06 | 3M创新有限公司 | Filtering face-piece respirator with the mask body for saving seam |
| CN105492084A (en) * | 2013-08-29 | 2016-04-13 | 3M创新有限公司 | Filtering face-piece respirator with stiffening member integral with filtering structure |
| CN105473192A (en) * | 2013-08-29 | 2016-04-06 | 3M创新有限公司 | Filtering face-piece respirator having darted mask body |
| CN103830980A (en) * | 2014-03-21 | 2014-06-04 | 吕晓莉 | Efficient haze filtering nuclear pore membrane filter and efficient haze filtering nuclear pore membrane respirator |
| JP2018500979A (en) * | 2014-12-04 | 2018-01-18 | スリーエム イノベイティブ プロパティズ カンパニー | Flat folding respirator |
| US10863784B2 (en) | 2014-12-04 | 2020-12-15 | 3M Innovative Properties Company | Flat-fold respirator |
| US11413481B2 (en) | 2015-05-12 | 2022-08-16 | 3M Innovative Properties Company | Respirator tab |
| US11813581B2 (en) | 2017-07-14 | 2023-11-14 | 3M Innovative Properties Company | Method and adapter for conveying plural liquid streams |
| CN111869953A (en) * | 2020-07-03 | 2020-11-03 | 深圳爱灵特思科技有限公司 | Children's gauze mask that light and temperature sense discolours |
| CN114390899A (en) * | 2020-08-14 | 2022-04-22 | 割方裕壮 | Mask support and method of using same |
| CN114711488A (en) * | 2021-01-06 | 2022-07-08 | 谢东宏 | Gauze mask |
| CN112890960A (en) * | 2021-01-20 | 2021-06-04 | 北京爱奇尔白依科技有限公司 | Ophthalmic hole towel |
| TWI783642B (en) * | 2021-08-20 | 2022-11-11 | 林弋航 | Mask and inner cover thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
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