Granted Patent
Utility
US 4,270,109 · App. 06/039,568
Bounce-free lifting device
Inventors:
Eberhard Riessland, Karl-Heinz Kruger
Patented Case
View Patent ↗
Granted: May 26, 1981
Filed: May 15, 1979
Inventors
Eberhard Riessland
Karl-Heinz Kruger
Assignee (at issue)
VEB Elektromat
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.