Granted Patent
Utility
US 4,388,738 · App. 06/237,389
Mattress construction and mattress cover therein
Inventor:
Robert F. Wagner
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: Feb 23, 1981
Inventor
Robert F. Wagner
Assignee (at issue)
Sealy, 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.