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| Patents for Knowlton & Beach | |||||
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| Number | Date | Patentee | Title | Type | |
| 447,225 | Feb. 24, 1891 | F.H. Beach | Machine for attaching stays to the corners of boxes | box making machines | |
| 447,955 | Mar. 10, 1891 | M.D. Knowlton | Box-jointing machine | box making machines | |
| RE11,167 | May 26, 1891 | F.H. Beach | Machine for attaching stays to the corners of boxes | box making machines | |