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Patents for Frank A. Brownell | |||||
Number | Date | Patentee | Title | Type | |
605,851 | Jun. 21, 1898 | F.A. Brownell | Photographic Camera | cameras | |
666,843 | Jan. 29, 1901 | F.A. Brownell | Spirit Level | camera accessories | |
785,707 | Mar. 28, 1905 | F.A. Brownell | Photographic Plate Holder | film and plate holders |