| Patents for Ridge Tool Co. |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 1,549,164 | Aug. 11, 1925 | W.O. Thewes | Pipe Wrench |
 | 1,552,091 | Sep. 01, 1925 | W.O. Thewes | Pipe Wrench |
 | 1,727,623 | Sep. 10, 1929 | W.O. Thewes | Wrench |
 | 1,833,980 | Dec. 01, 1931 | W.O. Thewes | Pipe cutter |
 | 2,004,639 | Jun. 11, 1935 | W.O. Thewes | Diestock |
 | 2,051,755 | Aug. 18, 1936 | W.O. Thewes | Pipe Wrench |
 | 2,076,830 | Apr. 13, 1937 | W.O. Thewes | Pipe Wrench |
 | D143,075 | Dec. 04, 1945 | C.H. Ingwer | Pipe Cutting Tool |
 | 2,780,944 | Feb. 12, 1957 | E.J. Ondeck | Reversible drive for power tools |
 | 2,863,396 | Dec. 09, 1958 | C.T. Heintz | Lubricating pump device |
