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| Patents Granted on 1925-10-13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,556,970 | Oct. 13, 1925 | H.J. Sproat | Lubricator Means for Crank Shafts in Internal Combustion Engines | ||
| 1,557,124 | Oct. 13, 1925 | H. Weichsel | Alternating-current motor | AC motors | |
| 1,557,204 | Oct. 13, 1925 | M.E. Keyne | Carpenter's Plane | ||
| 1,557,241 | Oct. 13, 1925 | J.C. Carlton | Friction Clutch | radial drill presses | |
| 1,557,395 | Oct. 13, 1925 | B.F. Augustine | Rotary Gas Engine | rotary engines | |
| 1,557,527 | Oct. 13, 1925 | R.T. Hazelton | Stroke Indicator | metal shapers | |