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| All Patents in class 200/35R | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 912,734 | Feb. 16, 1909 | A.W. Roovers | Coin controlled electrical apparatus | |
 | 992,336 | May 16, 1911 | I.L. Burrows | Drill Case | |
 | 1,074,813 | Oct. 07, 1913 | C.A. Palmgren | Time-controlled circuit-closing device | |
| 1,117,213 | Nov. 17, 1914 | H.B. McCabe | Time Controlled Electric Switch and Recording Register | ||
| 2,946,902 | Jul. 26, 1960 | P.A. Hagen | Repeat cycle timers | ||