US Patent: 409,253
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Screw Cutting Die Stock
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Patentees:
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James H. Sternbergh (exact or similar names) - Reading, Berks County, PA |
Robert Pemberton (exact or similar names) - Reading, Berks County, PA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Apr. 19, 1889 |
Granted: |
Aug. 20, 1889 |
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Joel Havens
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