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| All Patents in class 411/400 | |||||
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| Number | Date | Patentee | Title | Type | |
| 950,560 | Mar. 01, 1910 | P.H. Root | Lawn Mower Grinder | tool grinders | |
| 1,076,755 | Oct. 28, 1913 | O.C. Frame | Handsaw (detachable handle, square holes/notches w/thumbnut clamp) | saw handles | |
| 1,108,266 | Aug. 25, 1914 | W. Spacke | Inlet-Valve for Internal-Combustion Engines | internal combustion engine valves | |