US Patent: 379,213
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Screw Tap
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Patentees:
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Edwin Firth (exact or similar names) - Troy, Rensselaer County, NY |
Albert Tompkins (exact or similar names) - Troy, Rensselaer County, NY |
Ira Tompkins (exact or similar names) - Troy, Rensselaer County, NY |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Dec. 01, 1887 |
Granted: |
Mar. 13, 1888 |
USPTO (New site tip) Google Patents
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Joel Havens
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