| Patents for Duro Metal Products Co. |
Patents 1 -
15
of 92
      |
| Number | Date | Patentee | Title | Type |
| 1,744,413 | Jan. 21, 1930 | N.F. McNaught, E.H. Peterson | Socket-wrench tool | |
| 1,749,300 | Mar. 04, 1930 | W.H. Odlum, E.H. Peterson | Valve grinder | |
| 1,751,657 | Mar. 25, 1930 | N.F. McNaught, E.H. Peterson | Operating mechanism for valve grinders | |
| 1,788,535 | Jan. 13, 1931 | N.F. McNaught, E.H. Peterson | Socket-wrench kit | wrench set holders |
| 1,798,481 | Mar. 31, 1931 | N.F. McNaught, E.H. Peterson | Ratchet lever | ratchet wrenches |
| 1,798,482 | Mar. 31, 1931 | E.H. Peterson, N.F. McNaught | Ratchet lever | |
| 1,799,462 | Apr. 07, 1931 | W.L. Hawkins | Spare-tire lock | locks |
| 1,825,007 | Sep. 29, 1931 | N.F. McNaught | Valve seat reconstruction tool | |
| 1,851,313 | Mar. 29, 1932 | C.L. Johnson | Spare tire lock | locks |
| 1,854,137 | Apr. 12, 1932 | W.L. Hawkins | Spare wheel or tire lock | locks |
| 1,857,211 | May 10, 1932 | W.H. Odlum, E.H. Peterson | Wheel puller | |
| 1,858,372 | May 17, 1932 | N.F. McNaught, E.H. Peterson | Valve spring compressor | |
| 1,868,839 | Jul. 26, 1932 | N.F. McNaught, E.H. Peterson | Ratchet lever | |
| 1,868,840 | Jul. 26, 1932 | N.F. McNaught, E.H. Peterson | Ratchet lever | |
| 1,872,493 | Aug. 16, 1932 | W.H. Odlum, E.H. Peterson | Brake lining tool | brake maintenance |
