Granted Patent
Utility
US 4,408,090 · App. 06/227,757
Trimless carpet base insert device
Inventor:
John E. Kohaut
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Jan 23, 1981
Inventor
John E. Kohaut
Assignee (at issue)
Raceway Components, 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.