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| Patents Granted on 1950-01-31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,495,699 | Jan. 31, 1950 | G.H. Clark | Grip Tightening Device for Pipe Wrenches | pipe wrenches | |
| 2,495,927 | Jan. 31, 1950 | F.R. Francis | Lathe machine | metal lathe accessories and attachments | |
| 2,495,991 | Jan. 31, 1950 | J.H. Speed | Saw Filer Guide | saw sharpening tools | |
| 2,496,040 | Jan. 31, 1950 | W.W. Criley | Control Valve Mechanism for Clutches and Brakes | hydraulic valves | |
| 2,496,169 | Jan. 31, 1950 | E. Lochman | Variable pitch propeller | ||