CA Patent: CA-336,943
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| Tool
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Patentee:
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| Howard Havens Manning (exact or similar names) - Meadville, PA |
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Patent Dates:
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| Applied: |
Jul. 16, 1932 |
| Granted: |
Nov. 07, 1933 |
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Patent Pictures:
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Howards Havens Manning patent November 7, 1933 |
CIPO Data
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Stan Schulz
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Description: |
| Canadian patent corresponding to U.S. patent 1,950,362 granted March 6, 1934 for the "groove joint" structure marketed as CHANNELLOCK. Some examples of the early Channellock pliers include "PAT IN CANADA 1933" in the markings. |
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