Granted Patent
Utility
US 6,559,422 · App. 10/000,721
Expandable chamber having combined occupant support and heating
Inventor:
Steven Burt
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Oct 31, 2001
Inventor
Steven Burt
Assignee (at issue)
Ctex Seat Comfort Limited
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.