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| Patents Granted on 1921-03-22 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,372,006 | Mar. 22, 1921 | F.J. De Bruin | Sugar Cane Mill | sugar cane apparatus | |
| 1,372,033 | Mar. 22, 1921 | W.A. Marschke, F.W. Marschke | Grinder-hood | ||
| 1,372,045 | Mar. 22, 1921 | R.G. Sedgewick | Valve grinder | handheld power tools | |
| 1,372,075 | Mar. 22, 1921 | L.J. Kirchenbauer | Crank Pin Lathe | crank pin lathes | |
| 1,372,241 | Mar. 22, 1921 | J. McGhee | Pipe-Wrench | pipe wrenches | |
| 1,372,433 | Mar. 22, 1921 | F. Janusch | Vernier Surface Gage | surface gauges | |