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| Patents for Frank A. Brownell | |||||
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| Number | Date | Patentee | Title | Type | |
| 579,949 | Apr. 06, 1897 | F.A. Brownell | Roll Holding Camera | cameras | |
| 605,851 | Jun. 21, 1898 | F.A. Brownell | Photographic Camera | cameras | |
| 666,843 | Jan. 29, 1901 | F.A. Brownell | Spirit Level | camera accessories | |
| 689,159 | Dec. 17, 1901 | F.A. Brownell | Panoramic Photographic Camera | panoramic cameras | |
| 726,313 | Apr. 28, 1903 | J.E. Lenahan | Panoramic Photographic Camera | panoramic cameras | |
| 785,707 | Mar. 28, 1905 | F.A. Brownell | Photographic Plate Holder | film and plate holders | |