| All Patents in class 396/522 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 631,249 | Aug. 15, 1899 | W.F. Folmer | Magazine Plate Holder | film and plate holders |
| 766,835 | Aug. 09, 1904 | A.J. Merz | Photographic Plate Holder | film and plate holders |
| 785,707 | Mar. 28, 1905 | F.A. Brownell | Photographic Plate Holder | film and plate holders |
| 1,431,908 | Oct. 10, 1922 | W.F. Folmer | Cut Film Magazine | film and plate holders |
| 1,954,917 | Apr. 17, 1934 | W.E. Burnell | Means to prevent Double Exposures in Using Plate or Film Holders for Cameras | film and plate holders |
| 1,954,918 | Apr. 17, 1934 | W.H. Petit, W.E. Burnell, C.H. Roth | Means to prevent Double Exposures in Using Plate or Film Holders for Cameras | film and plate holders |
