US Patent: 114,027
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Improvement in Adjustable Spirit Levels
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Patentees:
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Joab Morss (exact or similar names) - Philadelphia, PA |
Franklin B. Abel (exact or similar names) - Philadelphia, PA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Apr. 25, 1871 |
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Russ Allen.
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Description: |
Plate covers the adjusting mechanisms and after adjustment clamps and secures the adjusting screw to maintain the adjustment. |
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