Granted Patent
Utility
US 6,475,592 · App. 09/405,502
Carpet backing that provides dimensional stability
Inventor:
Donald A. Irwin, Sr.
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Sep 23, 1999
Inventor
Donald A. Irwin, Sr.
Assignee (at issue)
Darwin Enterprises
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.