Granted Patent
Utility
US 6,131,679 · App. 09/422,413
Anti-tip assembly for power wheelchair
Inventors:
Dale A. Pulver, Roland A. Mentessi
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Oct 21, 1999
Inventors
Dale A. Pulver
Roland A. Mentessi
Assignee (at issue)
INVACARE 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.