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Patents for James A. Becher | |||||
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Number | Date | Patentee | Title | Type | |
411,002 | Sep. 17, 1889 | J.A. Becher | Bolt Threading Machine | metal threading machines | |
419,174 | Jan. 14, 1890 | J.A. Becher | Revolving Turret Bolt Threading Machine | metal threading machines | |
426,228 | Apr. 22, 1890 | J.A. Becher | Screw Cutting Die Head | tap and die holders | |
638,312 | Dec. 05, 1899 | J.A. Becher | Duplex Chucking Lathe | metal lathes |