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| All Patents in class 91/409 | |||||
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| Number | Date | Patentee | Title | Type | |
| 649,754 | May 15, 1900 | C.B. Richards | Pneumatic Tool | pneumatic tools | |
| 665,033 | Jan. 01, 1901 | C.B. Richards | Pneumatic Tool | pneumatic tools | |
| 856,569 | Jun. 11, 1907 | A.D. Catlin | Steam Feed Valve | steam valves | |
| 1,112,490 | Oct. 06, 1914 | R.C. Stevens | Steam Engine | steam engines | |
| 1,537,437 | May 12, 1925 | G. Graffinberger | Trimmer-saw mechanism | circular sawmills | |
| 1,937,244 | Nov. 28, 1933 | G.M. Pelton | Control means for dogging mechanism | sawmill dogs | |