US Patent: 1,358,078
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| Wrench
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Patentee:
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| John Halbritter (exact or similar names) - Boston, MA |
| USPTO Classifications: |
| 81/66 |
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Patent Dates:
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| Applied: |
May 19, 1920 |
| Granted: |
Nov. 09, 1920 |
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Patent Pictures:
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Patent 1,358,078 -- edited drawing |
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Stan Schulz
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Description: |
| Chain pipe wrench; the jaw structure allows for reversing the direction of action without removing the wrench. The specifications describe the patent as improvement to 802,187.
A known example of the BOSTONG includes "PAT. NOV. 9, 20." Another known example is marked with patent no. 802,187. |
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