Granted Patent
Utility
US 4,850,824 · App. 07/095,453
Arrangement for control of the stroke length
Inventor:
Ulf W. Naslund
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Sep 11, 1987
Inventor
Ulf W. Naslund
Assignee (at issue)
Aktiebolaget Electrolux
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.