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| All Patents in class 156/580 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,738 | Sep. 25, 1849 | H. Knowles | Caul for veneers | veneer machines | |
| 1,772,514 | Aug. 12, 1930 | J. Hoogerhyde | Four-way blocking clamp | clamps | |
| 1,970,698 | Aug. 21, 1934 | H.H. Hanson | Portable Repair Vulcanizer | tire repair tools | |