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| All Patents in class 346/17 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 568,784 | Oct. 06, 1896 | E.L. Miller | Automatic Recording Instrument | ||
| 677,674 | Jul. 02, 1901 | C.J. Manning | Recording Gage of Steam Pressure on Boilers | ||
| 785,677 | Mar. 21, 1905 | C.J. Manning | Recording Gage | ||
| 1,063,272 | Jun. 03, 1913 | H.B. McCabe | Time Recording Register | ||
| 2,946,646 | Jul. 26, 1960 | T.E. Curtis, J.L. Bower | Machine Tool Cutting Time Indicator | ||