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| Patents Granted on 1938-05-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,117,300 | May 17, 1938 | J. Corser | Rock crushing machine | ore processing apparatus | |
| 2,117,529 | May 17, 1938 | D.D. Wile | Temperature Control Apparatus | temperature controls | |
| 2,117,641 | May 17, 1938 | O.E. Westland | Work holder for endless conveyers | woodworking machine stockfeeding mechanisms | |
| 2,117,930 | May 17, 1938 | W.F. Zimmermann | Outboard Swivel Support | gear hobbing machines | |