Granted Patent
Utility
US 5,437,116 · App. 08/071,442
Modular sign system
Inventor:
Stephen N. Hardy
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Jun 3, 1993
Inventor
Stephen N. Hardy
Assignee (at issue)
RTC Industries, 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.