US Patent: 3,347,075
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| Tubular Wall Ridge Removing and Expanding Devices of the Portable Type
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Patentees:
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| Raymond G. Knudsen (exact or similar names) - Kenosha, WI |
| Robert E. Badger (exact or similar names) - Kenosha, WI |
| Raymond R. Zuzinec (exact or similar names) - Kenosha, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 09, 1963 |
| Granted: |
Oct. 17, 1967 |
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Stan Schulz
Snap-On Tools Company History
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Description: |
| Harry C. Alberts - patent attorney
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