US Patent: 857,991
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| Combined Level and Plumb
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Patentee:
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| William A. Gibson (exact or similar names) - Enid, OK |
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Patent Dates:
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| Applied: |
Aug. 06, 1906 |
| Granted: |
Jun. 25, 1907 |
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Patent Pictures:
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1 | 2
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Ralph Brendler
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Description: |
| This simple inclinometer features an unusual adjustment mechanism, and a pendulum unit that may be easily removed or replaced.
Production pieces were marked with the manufacturer's name and patent date on the metal plate. |
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