JPS61173593U - - Google Patents
Info
- Publication number
- JPS61173593U JPS61173593U JP5611285U JP5611285U JPS61173593U JP S61173593 U JPS61173593 U JP S61173593U JP 5611285 U JP5611285 U JP 5611285U JP 5611285 U JP5611285 U JP 5611285U JP S61173593 U JPS61173593 U JP S61173593U
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- dust
- ears
- dustproof
- retraction
- 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
- 239000012528 membrane Substances 0.000 claims description 14
- 210000005069 ears Anatomy 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5611285U JPH0336637Y2 (https=) | 1985-04-17 | 1985-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5611285U JPH0336637Y2 (https=) | 1985-04-17 | 1985-04-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61173593U true JPS61173593U (https=) | 1986-10-28 |
| JPH0336637Y2 JPH0336637Y2 (https=) | 1991-08-02 |
Family
ID=30579402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5611285U Expired JPH0336637Y2 (https=) | 1985-04-17 | 1985-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336637Y2 (https=) |
-
1985
- 1985-04-17 JP JP5611285U patent/JPH0336637Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0336637Y2 (https=) | 1991-08-02 |