Granted Patent
Utility
US 4,984,405 · App. 06/920,282
Insulation and the provision thereof
Inventor:
Robert A. Sauder
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Oct 17, 1986
Inventor
Robert A. Sauder
Assignee (at issue)
Thermal Ceramics, 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.