Granted Patent
Utility
US 5,152,579 · App. 07/552,473
Pumping system for the back support of a seat
Inventor:
Macram N. Bishai
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Jul 16, 1990
Inventor
Macram N. Bishai
Assignee (at issue)
McCord Winn Textron
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.