US Patent: 3,487,865
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| Cutter-head
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Patentees:
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| Daniel Hill (exact or similar names) - Kelowna, BC Canada |
| Frederic F. Chapman (exact or similar names) - Coquitlam, BC Canada |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jan. 06, 1970 |
| Reissue Information: |
| Reissued as RE27,654 (Jun. 05, 1973) |
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Jeff Joslin
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