| Patents for Howard D. Orr |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 644,089 | Feb. 27, 1900 | M.H. McCaulon | Wrench | tire bolt wrenches |
| 690,407 | Jan. 07, 1902 | F.W. Dent | Wrench | wrench jaw components |
| 690,595 | Jan. 07, 1902 | A.C. Maeder | Weather-Board Marker | clapboard markers |
| 722,637 | Mar. 10, 1903 | J.D. Smith | Tire-Bolt Wrench | tire bolt wrenches |
| 722,665 | Mar. 17, 1903 | M. Barber | Wrench | quick adjust wrenches |
| 754,069 | Mar. 08, 1904 | W.R. Johnson | Thresher-Cylinder Nut Wrench | cylinder tooth wrenches |
| 769,908 | Sep. 13, 1904 | C.E. Lamb | Calipers | calipers |
| 824,821 | Jul. 03, 1906 | E.L. Roberts, G.W. Roberts | Attachment for Combination Square | measurement gauges |
| 885,327 | Apr. 21, 1908 | G.W. Dorman | Shingle machine | shingle machines |
| 906,949 | Dec. 15, 1908 | J.W. Smith | Governing Mechanism for Explosive Devices | internal combustion engine governors |
| 987,589 | Mar. 21, 1911 | E.S. Mummert | Grinding Machine for Sharpening Edged Tools | sharpening machines |
| 1,255,737 | Feb. 05, 1918 | G.W. Godfrey | Drag Saw | drag saws |
| 1,263,666 | Apr. 23, 1918 | M. Hastings | Lawn Mower Sharpener | sharpeners |
| 1,272,196 | Jul. 09, 1918 | J.H. Bloodgood | Portable Hand Planer | handheld power planers |
| D53,620 | Jul. 15, 1919 | L.L. Walton | Wrench | socket wrenches |
