Granted Patent
Utility
US 5,529,743 · App. 08/268,831
Methods for the manufacture of clean air ducts
Inventor:
James A. Powell
Patented Case
View Patent ↗
Granted: Jun 25, 1996
Filed: Jun 30, 1994
Inventor
James A. Powell
Assignee (at issue)
STEERE ENTERPRISES, 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.