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All Patents in class 411/436 | |||||
Number | Date | Patentee | Title | Type | |
135,898 | Feb. 18, 1873 | T. English | Screw Bolts and Nuts | nuts and bolts | |
413,316 | Oct. 22, 1889 | W.J. Dobson | Counterbore Auger Attachment | drill accessories | |
447,775 | Mar. 10, 1891 | C.A. Higbee | Screw bolt and nut | firefighting tools | |
658,085 | Sep. 18, 1900 | C.A. Higbee | Screw-coupling | industrial machine shaft couplings |