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| All Patents in class 355/75 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,236,303 | Mar. 25, 1941 | F.P. Wilcox, C.R. Skinner | Photographic Printer for Restitutional, Enlarging and Other Purposes | photographic printers | |
| 2,294,585 | Sep. 01, 1942 | J.P. Thomson | Photographic Enlarger or Projection Printer | photographic printers | |