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| All Patents in class 40/902 | |||||
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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 | |
| 2,006,370 | Jul. 02, 1935 | L.J. Schumacker, E.A. Reussenzehn | Scale head | ||