Granted Patent
Utility
US 5,003,233 · App. 07/292,786
Radio frequency powered large scale display
Inventors:
Joseph M. Proud, Walter P. Lapatovich
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Jan 3, 1989
Inventors
Joseph M. Proud
Walter P. Lapatovich
Assignee (at issue)
GTE Laboratories Incorporated
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.