Granted Patent
Utility
US 4,951,407 · App. 07/117,032
Yieldable sign stand
Inventor:
William A. Werner
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Nov 4, 1987
Inventor
William A. Werner
Assignee (at issue)
Flex-o-lite, 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.