JPH02147142U - - Google Patents
Info
- Publication number
- JPH02147142U JPH02147142U JP5512889U JP5512889U JPH02147142U JP H02147142 U JPH02147142 U JP H02147142U JP 5512889 U JP5512889 U JP 5512889U JP 5512889 U JP5512889 U JP 5512889U JP H02147142 U JPH02147142 U JP H02147142U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- holding frame
- cover
- nose cup
- filter holding
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000002341 toxic gas Substances 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989055128U JPH0736668Y2 (ja) | 1989-05-12 | 1989-05-12 | 半面マスク |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989055128U JPH0736668Y2 (ja) | 1989-05-12 | 1989-05-12 | 半面マスク |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02147142U true JPH02147142U (es) | 1990-12-13 |
| JPH0736668Y2 JPH0736668Y2 (ja) | 1995-08-23 |
Family
ID=31577806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989055128U Expired - Lifetime JPH0736668Y2 (ja) | 1989-05-12 | 1989-05-12 | 半面マスク |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736668Y2 (es) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6392650U (es) * | 1986-12-03 | 1988-06-15 |
-
1989
- 1989-05-12 JP JP1989055128U patent/JPH0736668Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6392650U (es) * | 1986-12-03 | 1988-06-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0736668Y2 (ja) | 1995-08-23 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |