| Patents for Herbert L. Johnston |
Patents 16 -
30
of 56
      |
| Number | Date | Patentee | Title | Type |
| 1,579,323 | Apr. 06, 1926 | H.L. Johnston | Stirrer | |
| 1,611,042 | Dec. 14, 1926 | M.K. Akers, H.L. Johnston | Variable-speed mechanism | |
| 1,616,750 | Feb. 08, 1927 | H.L. Johnston | Glass hopper | |
| 1,651,822 | Dec. 06, 1927 | H.L. Johnston | Transmission mechanism | |
| 1,665,304 | Apr. 10, 1928 | M.K. Akers, H.L. Johnston | Short-circuiting device for electric motors | |
| 1,669,006 | May 08, 1928 | H.L. Johnston | Clutch mechanism | industrial machine clutches |
| 1,670,261 | May 15, 1928 | H.L. Johnston | Apparatus for cutting foodstuffs | |
| 1,674,903 | Jun. 26, 1928 | T.F. Rataiczak, H.L. Johnston | Mixing machine | |
| 1,696,636 | Dec. 25, 1928 | H.L. Johnston | Grinding apparatus | |
| 1,709,912 | Apr. 23, 1929 | H.L. Johnston | Apparatus for cutting foodstuffs | |
| 1,724,598 | Aug. 13, 1929 | H.L. Johnston | Apparatus for preparing foodstuffs | |
| 1,747,443 | Feb. 18, 1930 | H.L. Johnston | Mixing machine | |
| 1,766,999 | Jun. 24, 1930 | H.L. Johnston | Food-handling machine | |
| 1,767,000 | Jun. 24, 1930 | H.L. Johnston, D.A. Meeker | Food-handling apparatus | |
| 1,767,001 | Jun. 24, 1930 | H.L. Johnston | Waste-food-handling apparatus | |
