Granted Patent
Utility
US 4,642,995 · App. 06/719,363
Damped displacer refrigerating machine
Inventors:
Werner Bachler, Rolf Heisig, Hans-Hermann Klein, Karl-Heinz Volker
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Apr 3, 1985
Inventors
Werner Bachler
Rolf Heisig
Hans-Hermann Klein
Karl-Heinz Volker
Assignee (at issue)
Leybold-Heraeus GmbH
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.