| Patents for Duro Metal Products Co. |
Patents 1 -
10
of 92
      |
| Picture | Number | Date | Patentee | Title |
 | 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 |
 | 1,798,481 | Mar. 31, 1931 | N.F. McNaught, E.H. Peterson | Ratchet lever |
 | 1,798,482 | Mar. 31, 1931 | N.F. McNaught, E.H. Peterson | Ratchet lever |
 | 1,799,462 | Apr. 07, 1931 | W.L. Hawkins | Spare-tire lock |
 | 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 |
 | 1,854,137 | Apr. 12, 1932 | W.L. Hawkins | Spare wheel or tire lock |
