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| Patents Granted on 1920-05-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-200,173 | May 18, 1920 | H. Schaake | Radius lever end | shingle machines | |
| 1,340,320 | May 18, 1920 | J.M. Brown | Crimped-elbow-bending machine | ||
| 1,340,359 | May 18, 1920 | F.O. Albertson | Valve-seat reamer | reamers | |
| 1,340,709 | May 18, 1920 | R.D. Eaglesfield, M.B. Gathman | Spindle adjustment for motor-driven molders | molders | |