Granted Patent
Utility
US 4,862,532 · App. 07/144,819
Bedding foundation having snap-in place sinuous wire springs
Inventors:
Thomas J. Wells, Angelo Serafini, Sidney A. Hiatt, Henry Zapletal
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Jan 15, 1988
Inventors
Thomas J. Wells
Angelo Serafini
Sidney A. Hiatt
Henry Zapletal
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.