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| Patents for Martin Kahr | |||||
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| Number | Title | Classification(s) | |||
| 1,900,384 | Power Plant for Drilling Apparatus | 74/471R, 74/661 | |||
| 1,900,385 | Fuel Feeding Means | 123/364, 123/374, 123/501, 137/539, 73/547 | |||
| 2,270,059 | Control mechanism for sawmill carriage steam feeds | 91/378, 91/51 | |||
| 2,318,163 | Saw mill dog | 269/24, 269/54.3, 83/409, 83/461 | |||
| 2,560,449 | Free piston engine | 91/243, 91/25, 91/39 | |||