US Patent: 475,440
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| Perforating, dating, and receipting stamp
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Patentees:
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| Benjamin F. Cummins (exact or similar names) - Chicago, IL |
| John Stenwall, Jr. (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Nov. 09, 1891 |
| Granted: |
May 24, 1892 |
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Jeff Joslin
YouTube video of perforator restoration
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Description: |
| This patent number was seen on a "No. 2 Perforator" from B. F. Cummins Co. This patent provides improvements to Christian Hill's perforator patents, 409,324 and 433,003. The primary improvement is to allow multiple characters to be punched at once. |
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