US Patent: 715,582
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Test Indicator
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Patentees:
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Fredric B. Jacobs (exact or similar names) - Quincy, MA |
Harold D. Waterhouse (exact or similar names) - Quincy, MA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Oct. 09, 1902 |
Granted: |
Dec. 09, 1902 |
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Joel Havens
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Description: |
Henry W. Williams - patent attorney |
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