US Patent: 2,046,839
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| Screw
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Patentees:
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| Henry F. Phillips (exact or similar names) - Portland, OR |
| Thomas M. Fitzpatrick (exact or similar names) - Portland, OR |
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Patent Dates:
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| Applied: |
Jan. 15, 1935 |
| Granted: |
Jul. 07, 1936 |
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Russ Allen.
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Description: |
| Improvement of Phillips previous application of 9 May 1933. Companion patent with the corresponding screwdriver 2046838. |
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