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All Patents in class 91/358A | |||||
Number | Date | Patentee | Title | Type | |
453,980 | Jun. 09, 1891 | E.S. Matthews | Hydraulic valve-gear | ||
876,428 | Jan. 14, 1908 | J.G. Blessing | Fluid Pressure Operated Grinding Machine | sharpening machines | |
3,039,441 | Jun. 19, 1962 | J.G. Padelt, A.F. Hurlburt | Photographic Camera | cameras |