Granted Patent
Utility
US 4,541,627 · App. 06/518,378
Exercise rowing machine
Inventors:
W. Douglas MacLean, Robert A. Rasmussen
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Jul 29, 1983
Inventors
W. Douglas MacLean
Robert A. Rasmussen
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.