CA Patent: CA-2,450
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| Circular saw teeth
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Patentees:
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| Nelson Johnson (exact or similar names) - Jasper, NY |
| Willis E. Craig (exact or similar names) - Newkarket, ON Canada |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jun. 11, 1873 |
CIPO Data
Espacenet patent
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Jeff Joslin
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Description: |
| This invention was earlier granted U. S. patent 200,833, which was granted to Nelson Johnson. It appears that the Canadian co-inventor was added to skirt Canadian patent laws that made it difficult for non-Canadians to be granted a patent. |
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