US Patent: 514,721
|
| Chain Pipe Wrench
|
|
Patentee:
|
|
| Charles L. Mahnicke (exact or similar names) - Columbus, OH |
| USPTO Classifications: |
| 81/68 |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Apr. 06, 1891 |
| Granted: |
Feb. 13, 1894 |
|
Patent Pictures:
|
|
Charles L. Mahnicke patent February 13, 1894 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Improvement to patent no. 415,047 with improved means for holding the chain, and parallel rows of gripping teeth.
Noted as reference in patent no. 3,304,817. |
|
