| Patents for Duro Metal Products Co. |
Patents 16 -
30
of 92
      |
| Number | Date | Patentee | Title | Type |
| 1,877,348 | Sep. 13, 1932 | N.F. McNaught, E.H. Peterson | Valve grinder | |
| 1,902,878 | Mar. 28, 1933 | N.F. McNaught, E.H. Peterson | Ratchet wrench | ratchet wrenches |
| 1,903,058 | Mar. 28, 1933 | N.F. McNaught, E.H. Peterson | Means and method for applying brake shoe linings | brake maintenance |
| 1,921,225 | Aug. 08, 1933 | W.L. Hawkins | Spare wheel lock | locks |
| 1,932,796 | Oct. 31, 1933 | N.F. McNaught | Grease ram | |
| 1,950,493 | Mar. 13, 1934 | C.L. Johnson | Spare wheel and tire lock | locks |
| 1,952,087 | Mar. 27, 1934 | E.H. Peterson, N.F. McNaught | Valve guide and unseater | |
| 1,968,215 | Jul. 31, 1934 | N.F. McNaught, E.H. Peterson | Tool for cleaning commutators and the like | |
| RE19,341 | Oct. 16, 1934 | E.H. Peterson, N.F. McNaught | Ratchet Wrench and Method of Making the Same | ratchet wrenches |
| 1,978,590 | Oct. 30, 1934 | N.F. McNaught, E.H. Peterson | Wrench joint | |
| D95,825 | Jun. 04, 1935 | T.L. Hedgpeth | Design for a sanding machine | handheld power sanders |
| D97,643 | Nov. 26, 1935 | T.L. Hedgpeth | Design for a table jointer | jointers |
| 2,027,922 | Jan. 14, 1936 | N.F. McNaught | Method of making wrench sockets | |
| 2,044,982 | Jun. 23, 1936 | T.L. Hedgpeth | Sanding machine | sanding machines |
| 2,044,983 | Jun. 23, 1936 | T.L. Hedgpeth | Belt and pulley measuring apparatus | |
