US Patent: 339,369
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Spirit Level
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Patentee:
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George Blythe (exact or similar names) - Chillicothe, MO |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Aug. 11, 1885 |
Granted: |
Apr. 06, 1886 |
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Russ Allen.
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Description: |
Cover plate has two notches cut out to help prevent the cover from casting a shadow on the vial and bubble. |
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