Granted Patent
Utility
US 5,316,432 · App. 07/986,569
Wheelchair lifts with automatic barrier
Inventors:
Raymond L. Smalley, John C. Hall, Ryan J. Clouse, P. Fred Risner, Edward L. Strohm
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Dec 7, 1992
Inventors
Raymond L. Smalley
John C. Hall
Ryan J. Clouse
P. Fred Risner
Edward L. Strohm
Assignee (at issue)
REB Manufacturing Co., 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.