| Patents for Hein-Werner Corp. |
Patents 1 -
15
of 65
      |
| Number | Date | Patentee | Title | Type |
| 2,038,974 | Apr. 28, 1936 | R.W. Werner | Hydraulic jack | hydraulic jacks |
| CA-365,295 | Apr. 06, 1937 | R.W. Werner | Hydraulic jack | hydraulic jacks |
| 2,211,249 | Aug. 13, 1940 | R.W. Werner | Hydraulic jack and method in the manufacture thereof | hydraulic jacks |
| CA-400,933 | Nov. 25, 1941 | R.W. Werner | Hydraulic jack | hydraulic jacks |
| 2,507,003 | May 09, 1950 | A. Gagne | Yoke and drawbar element for hydraulic sleeve-pulling devices | cylinder maintenance |
| 2,938,564 | May 31, 1960 | S.J. Rhodes | Three point bender with rod guided ram | pipe bending machines |
| 3,268,208 | Aug. 23, 1966 | H.O. Feilbach, D.E. Stuart | Air jack with lubricating means | jacks |
| 3,396,860 | Aug. 13, 1968 | W.J. Witwer, J.V. Wright | Excavator and grader or crane apparatus | excavators |
| 3,426,926 | Feb. 11, 1969 | W.J. Witwer | Hydraulic system for use with telescopic boom apparatus | |
| 3,451,560 | Jun. 24, 1969 | W.J. Witwer | Remote control system | |
| CA-821,931 | Sep. 02, 1969 | W.J. Witwer | Hydraulic system for use with telescopic boom apparatus | |
| CA-822,521 | Sep. 09, 1969 | W.J. Witwer, J.V. Wright | Excavator and grader or crane apparatus | excavators |
| 3,476,274 | Nov. 04, 1969 | W.J. Witwer | Backhoe hydraulic control system | |
| CA-851,502 | Sep. 15, 1970 | W.J. Witwer | Backhoe hydraulic control system | |
| 3,589,539 | Jun. 29, 1971 | W.J. Witwer | Backhoe having an articulated gooseneck boom | |
