US Patent: 1,282,670
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| Combined Lock and Butt Gage
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Patentee:
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| Mathew F. Biersdorf (exact or similar names) - Los Angeles, CA |
| USPTO Classifications: |
| 33/44 |
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Patent Dates:
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| Applied: |
Oct. 18, 1917 |
| Granted: |
Oct. 22, 1918 |
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Patent Pictures:
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Ralph Brendler
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Description: |
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This is a simplification of Mathew Biersdorf's 1915 patent
(1,142,138), which retains the interesting features of the
original, but makes it easier to produce and set.
The production pieces are marked only "MFB", so it is assumed
that Mr. Biersdorf produced the tools himself.
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