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| Patents for Walter F. Klein | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,772,723 | Aug. 12, 1930 | W.F. Klein | Method Of Making Socket Wrenches | wrench sockets | |
| 1,790,238 | Jan. 27, 1931 | W.F. Klein | Socket Connection | socket wrenches | |
| 1,827,202 | Oct. 13, 1931 | W.F. Klein | Ratchet Wrench | ratchet wrenches | |
| 1,958,705 | May 15, 1934 | W.F. Klein | Apparatus for Thin Wall Broaching | ||