| All Patents of Type: transportation |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 2,560,131 | Jul. 10, 1951 | F.P. Hopfeld, A.M. Sasgen | Hand truck with elevator platform | transportation |
| 2,708,048 | May 10, 1955 | F.P. Hopfeld | Handling equipment for barrels or the like | transportation |
| 2,905,347 | Sep. 22, 1959 | F.P. Hopfeld | Drum handling lift truck | transportation |
| 2,948,363 | Aug. 09, 1960 | F.P. Hopfeld | Telescoping elevators | transportation |
| 3,052,323 | Sep. 04, 1962 | F.P. Hopfeld | Lift truck | transportation |
| 3,216,599 | Nov. 09, 1965 | F.P. Hopfeld | Lift truck with a detachable mast assembly, and a propelling and elevating control system | transportation |
| 3,360,078 | Dec. 26, 1967 | F.P. Hopfeld | Lifts | transportation |
