US Patent: 1,732,549
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| Wrench For Tool Holders
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Patentee:
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| Lennox F. Armstrong (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 17, 1928 |
| Granted: |
Oct. 22, 1929 |
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Patent Pictures:
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Lennox F. Armstrong patent October 22. 1929 |
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Stan Schulz
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Description: |
| The undercut edge of the socket in this wrench is to avoid breaking the edge of cutters in a tool holder like the one described in pat. no. 535,440. |
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