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