US Patent: 3,500,523
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| Tool Holder Construction
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Patentees:
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| Robert W. Cashman (exact or similar names) - Saginaw, Saginaw County, MI |
| Anthony Wasco, Jr. (exact or similar names) - Saginaw, Saginaw County, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 14, 1967 |
| Granted: |
Mar. 17, 1970 |
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Joel Havens
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