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| Patents Granted on 1919-04-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE14,640 | Apr. 29, 1919 | R.A. Durland | Valve Spring Compressor | valve spring tools | |
| D53,260 | Apr. 29, 1919 | F.O. Von Tobel | Combination Tool | combination tools | |
| 1,301,891 | Apr. 29, 1919 | F.O. Albertson | Valve Refacing Tool | valve grinding tools | |
| 1,301,937 | Apr. 29, 1919 | J.N. Heald, A.M. Drake | Belt-tightener | grinding machines | |
| 1,301,996 | Apr. 29, 1919 | R.H. Barr | Square for Tools | ||
| 1,302,131 | Apr. 29, 1919 | R.L. Carter | Centering-gage | center marking gauges | |