CH9133A - Respirator mask - Google Patents
Respirator maskInfo
- Publication number
- CH9133A CH9133A CH9133A CH9133DA CH9133A CH 9133 A CH9133 A CH 9133A CH 9133 A CH9133 A CH 9133A CH 9133D A CH9133D A CH 9133DA CH 9133 A CH9133 A CH 9133A
- Authority
- CH
- Switzerland
- Prior art keywords
- respirator mask
- respirator
- mask
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH9133T | 1894-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH9133A true CH9133A (en) | 1895-03-31 |
Family
ID=4198079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH9133A CH9133A (en) | 1894-08-31 | 1894-08-31 | Respirator mask |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH9133A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109514A1 (en) * | 1982-11-08 | 1984-05-30 | American Optical Corporation | Improved single-element filter and respirator |
DE102020002407A1 (en) | 2020-04-22 | 2021-10-28 | Fritz Wiehofsky | Respiratory protection mask - permanently reusable, particle-filtering half mask in accordance with European standard EN 149: 2001 + A1: 2009, at least protection class FFP2 |
-
1894
- 1894-08-31 CH CH9133A patent/CH9133A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109514A1 (en) * | 1982-11-08 | 1984-05-30 | American Optical Corporation | Improved single-element filter and respirator |
DE102020002407A1 (en) | 2020-04-22 | 2021-10-28 | Fritz Wiehofsky | Respiratory protection mask - permanently reusable, particle-filtering half mask in accordance with European standard EN 149: 2001 + A1: 2009, at least protection class FFP2 |
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