US Patent: 278,225
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Calipers
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Patentees:
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Robert G. Henry (exact or similar names) - Waterbury, CT |
Ralph Crittenden (exact or similar names) - Hartford, CT |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Mar. 22, 1883 |
Granted: |
May 22, 1883 |
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Joel Havens
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Description: |
C. Chitchester - patent attorney |
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