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| All Patents in class 235/142 | |||||
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| Number | Date | Patentee | Title | Type | |
| 364,063 | May 31, 1887 | J. Thompson | Lumber Register | measuring apparatus | |
| 707,652 | Aug. 26, 1902 | E.W. Sibley | Calculator | ||
| 1,426,434 | Aug. 22, 1922 | W. Williamson | Counter | counting registers | |