Granted Patent
Utility
US 4,154,975 · App. 05/774,394
Method and apparatus for supporting electric heating elements in a furnace insulated with ceramic fiber
Inventor:
Robert A. Sauder
Patented Case
View Patent ↗
Granted: May 15, 1979
Filed: Mar 4, 1977
Inventor
Robert A. Sauder
Assignee (at issue)
Sauder Industries, 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.