| Patents for Ernest A. Hall |
Patents 1 -
10
of 35
      |
| Picture | Number | Date | Patentee | Title |
| | 1,692,439 | Nov. 20, 1928 | E.A. Hall | Grinding Tool |
| | 1,694,705 | Dec. 11, 1928 | E.A. Hall | Valve Hone |
| | 1,695,548 | Dec. 18, 1928 | E.A. Hall, G.E. Burns | Gas Burner |
| | CA-285,926 | Dec. 25, 1928 | G.J. Lindroth, E.A. Hall | Cylinder Hone |
| | 1,696,477 | Dec. 25, 1928 | G.J. Lindroth, E.A. Hall | Cylinder Hone |
| | CA-290,588 | Jun. 18, 1929 | E.A. Hall | Cylinder Hone |
| | 1,723,160 | Aug. 06, 1929 | E.A. Hall | Supporting Standard for Cylinder Hones |
| | 1,748,126 | Feb. 25, 1930 | E.A. Hall | Pilot Stem |
| | 1,760,493 | May 27, 1930 | E.A. Hall | Portable Grinding Tool |
| | 1,796,842 | Mar. 17, 1931 | E.A. Hall | Cylinder Hone |
