| Patents for Howard P. Denison |
Patents 1 -
10
of 18
      |
| Picture | Number | Date | Patentee | Title |
 | 389,291 | Sep. 11, 1888 | A. Dey | Razor-sharpening machine |
 | 468,093 | Feb. 02, 1892 | J. Carr | Surface Gauge |
 | 483,785 | Oct. 04, 1892 | G.S. Hilts | Pipe Wrench |
 | 488,600 | Dec. 27, 1892 | J.J. Cowell | Vise |
 | 490,121 | Jan. 17, 1893 | H.J. Leighton | Protractor Bevel |
 | 510,441 | Dec. 12, 1893 | W.L. Pike | Improvements in Vehicle Wrenches |
 | 519,703 | May 15, 1894 | O.C. Ekman | Surface Gage |
 | 534,470 | Feb. 19, 1895 | G.H. Fowler | Harvester-knife grinder |
 | 546,094 | Sep. 10, 1895 | F.F. Ellis | Micrometer Calipers |
 | 565,002 | Aug. 04, 1896 | A.B. Ireland | Clutch |
