| Patents for D. B. Richards |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 134,284 | Dec. 24, 1872 | F.A. Huntington | Roller crushing-mill | ore processing apparatus |
| 648,960 | May 08, 1900 | F.A. Huntington | Roller crushing-mill | ore processing apparatus |
| D32,795 | Jun. 05, 1900 | J. Simonds | Design for a Member for Saw Handles | saw handles |
| 661,184 | Nov. 06, 1900 | J.T. Ludlow | Ammonia-compressor | refrigeration apparatus |
| 742,480 | Oct. 27, 1903 | E.I. Nichols | Steam-generator | steam generators |
| 902,830 | Nov. 03, 1908 | A.W. Peterson | Wrench | quick adjust wrenches |
| 968,958 | Aug. 30, 1910 | P. Krichbaum | Folding Square | carpenter squares |
| 985,366 | Feb. 28, 1911 | C.K. Orton | Impelling pressure-roller for wood-planing machines | wood planers |
| 1,041,687 | Oct. 15, 1912 | J. Smith | Carpenter's Gage | marking gauges |
| 1,081,626 | Dec. 16, 1913 | A.W. Peterson | Wrench | quick adjust wrenches |
| 1,088,544 | Feb. 24, 1914 | L.D. Craig | Combined Folding Rule and Square | folding rules |
| 1,112,085 | Sep. 29, 1914 | C.K. Orton | Cutter-head | cutterheads |
| 1,136,146 | Apr. 20, 1915 | J.J. Krohn, F.J. Davis | Stave-sander | cooper |
| 1,139,823 | May 18, 1915 | A.P. Thomas, G. Carlson | Band-saw machine | bandsaws |
| 1,263,590 | Apr. 23, 1918 | H.G. Morrow | Grease Gun | grease guns |
