Granted Patent
Utility
US 5,545,233 · App. 08/244,411
Swing phase control device
Inventor:
Gerhard Fitzlaff
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: May 24, 1994
Inventor
Gerhard Fitzlaff
Assignee (at issue)
Biedermann Motech 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.