Granted Patent
Utility
US 6,425,635 · App. 09/432,483
Weight-shifting reclining and tilting wheelchair seat
Inventor:
Dale A. Pulver
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: Nov 1, 1999
Inventor
Dale A. Pulver
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.