US Patent: 450,681
|
Wrench
|
Patentee:
|
|
Daniel R. Porter (exact or similar names) - Chelsea, MA |
Manufacturer: |
Not known to have been produced |
|
Patent Dates:
|
Applied: |
May 10, 1890 |
Granted: |
Apr. 21, 1891 |
Patent Pictures:
|
|
Daniel R. Porter patent April 21, 1891 |
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Stan Schulz
|
Description: |
Improvement to patent no. 426,956. "Ears" extending from the frame hold and align the adjusting nut of a "Stilson" type pipe wrench. Corresponding British patent GB-189106878 was registered April 21, 1891; Canadian patent CA-41,437 was granted Dec. 30, 1892. |
|