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| All Patents in class 218/1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 772,908 | Oct. 18, 1904 | G.E. Miles, C. Ridderhof | Flashing device for incandescent electric lamps | electrical devices | |
| 1,116,871 | Nov. 10, 1914 | D.M. Bliss | Method and means for reducing sparking in electrical apparatus | electrical devices | |