Granted Patent
Utility
US 4,263,683 · App. 06/057,236
Bed frame
Inventor:
Silas J. Knoke
Patented Case
View Patent ↗
Granted: Apr 28, 1981
Filed: Jul 13, 1979
Inventor
Silas J. Knoke
Assignee (at issue)
Lear Siegler, 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.