JPH02121049U - - Google Patents
Info
- Publication number
- JPH02121049U JPH02121049U JP3009189U JP3009189U JPH02121049U JP H02121049 U JPH02121049 U JP H02121049U JP 3009189 U JP3009189 U JP 3009189U JP 3009189 U JP3009189 U JP 3009189U JP H02121049 U JPH02121049 U JP H02121049U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- whistle
- assembly
- valve seat
- threaded guide
- 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
- 239000000428 dust Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 2
- 230000008602 contraction Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000007799 cork Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3009189U JPH074033Y2 (ja) | 1989-03-16 | 1989-03-16 | 笛の吹鳴装置を具えた防塵・防毒マスク |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3009189U JPH074033Y2 (ja) | 1989-03-16 | 1989-03-16 | 笛の吹鳴装置を具えた防塵・防毒マスク |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02121049U true JPH02121049U (zh) | 1990-10-01 |
JPH074033Y2 JPH074033Y2 (ja) | 1995-02-01 |
Family
ID=31254847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3009189U Expired - Fee Related JPH074033Y2 (ja) | 1989-03-16 | 1989-03-16 | 笛の吹鳴装置を具えた防塵・防毒マスク |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH074033Y2 (zh) |
-
1989
- 1989-03-16 JP JP3009189U patent/JPH074033Y2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH074033Y2 (ja) | 1995-02-01 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |