Granted Patent
Utility
US 4,760,622 · App. 06/892,704
Compound winding apparatus and counterbalance systems
Inventor:
Henry Rohrman
Patented Case
View Patent ↗
Granted: Aug 2, 1988
Filed: Jul 31, 1986
Inventor
Henry Rohrman
Assignee (at issue)
Schlegel Corporation
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.