Granted Patent
Utility
US 4,180,877 · App. 05/944,914
Mattress
Inventor:
Larry Higgins
Patented Case
View Patent ↗
Granted: Jan 1, 1980
Filed: Sep 22, 1978
Inventor
Larry Higgins
Assignee (at issue)
LEGGETT & PLATT, 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.