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All Patents of Type: roll film spools | |||||
Number | Date | Patentee | Title | Type | |
1,065,601 | Jun. 24, 1913 | W.F. Folmer | Film Spool Center | roll film spools | |
1,186,653 | Jun. 13, 1916 | W.F. Folmer | Film Spool Center | roll film spools | |
1,187,895 | Jun. 20, 1916 | W.F. Folmer | Photographic Roll Holder | roll film spools | |
3,003,712 | Oct. 10, 1961 | R.L. Dalton | Take-Up Spool for Photographic Cameras | roll film spools |