US Patent: 2,297,691
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| Electrophotography
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Patentee:
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| Chester F. Carlson (exact or similar names) - Jackson Heights, NY |
| USPTO Classifications: |
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101/467, 101/DIG.37, 219/216, 347/131, 347/137, 347/140, 358/300, 361/225, 399/314, 430/120.1, 430/124.1, 430/125.32, 430/55
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 04, 1939 |
| Granted: |
Oct. 06, 1942 |
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Joel Havens
USPTO news release commemorating this patent
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Description: |
| This patent is the genesis of the dry copying process, i.e., photocopying. In 1947 the patent was assigned to Haloid Co., which became the Xerox Corp. |
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