Granted Patent
Utility
US 4,525,960 · App. 06/575,364
Basement wall insulating and waterproofing system and method
Inventor:
Josh Kelman
Patented Case
View Patent ↗
Granted: Jul 2, 1985
Filed: Jan 30, 1984
Inventor
Josh Kelman
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.