Name | Street | Town | State | From | To |
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Blittkowski, Gustav Adolph, and Hoffman, Frederick William |   | New York City | New York | 1856 | 1857 |
Patent | Date | Remarks |
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14,488 | March 25, 1856 | Patent drawing Specification Specification 2nd page |
14,710 | April 22, 1856 | Patent drawing Patent drawing 2nd page Specification Specification 2nd page Specification 3rd page |
17,136 | April 28, 1857 | Patent drawing Specification Specification 2nd page |
Contract | for |
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Product |
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Non production was made or is known |