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All Patents of Type: optician | |||||
Number | Date | Patentee | Title | Type | |
703,725 | Jul. 01, 1902 | F. Hardinge | Diopter gage | optician | |
878,507 | Feb. 11, 1908 | J.M. Coghlan | Opticians Measuring Instrument | optician | |
1,141,864 | Jun. 01, 1915 | P.J. Boucher | Tool Holder | tool holders | |
1,151,635 | Aug. 31, 1915 | A.T. Webb | Diopter gage | optician |