Granted Patent
Utility
US 5,090,841 · App. 07/578,141
Boat lift
Inventors:
Clarence A. Penick, Jr., Darrel Walters
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Sep 6, 1990
Inventors
Clarence A. Penick, Jr.
Darrel Walters
Assignee (at issue)
BRAMMALL, INC.
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.