| Patents for M. T. Longden |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 533,855 | Feb. 12, 1895 | A.L. Adams | Auger-bit | auger bits |
| 760,031 | May 17, 1904 | C.E. Smith | Try-Square | squares |
| 841,758 | Jan. 22, 1907 | W.H. Adams | Drill-chuck | drill chucks |
| 1,010,755 | Dec. 05, 1911 | F.S. Harrington | Pick | pick axes |
| 1,119,765 | Dec. 01, 1914 | F.C. Sanford | Die Stock | tap wrenches and die stocks |
| 1,193,525 | Aug. 08, 1916 | P. Dosch, C.R. Dosch | Disk-grinding machine | sharpening machines |
| 1,214,521 | Feb. 06, 1917 | C.R. Dosch, P. Dosch | Clamping appliance | hand screws |
| 1,226,173 | May 15, 1917 | C.F. Benjamin | Combined Carpenter's Square and Miter-Gage | carpenter squares |
