| Patents for William F. Longfield |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 2,283,505 | May 19, 1942 | W.F. Longfield | Metalworking press |
 | 2,287,689 | Jun. 23, 1942 | W.F. Longfield | Tie-plate punch |
 | 2,298,492 | Oct. 13, 1942 | W.F. Longfield | Automatic controlling apparatus for strip feeding mechanism |
 | 2,347,272 | Apr. 25, 1944 | W.F. Longfield | Sheet metal working press |
 | 2,436,968 | Mar. 02, 1948 | W.F. Longfield | Combined clutch and brake |
 | 2,441,543 | May 11, 1948 | W.F. Longfield | Combined clutch and brake |
 | 2,441,544 | May 11, 1948 | W.F. Longfield | Strip uncoiler |
