Granted Patent
Utility
US 5,264,913 · App. 07/677,220
Reduced combiner helicopter sight system
Inventors:
Ronald G. Hegg, Mao-Jin Chern
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Mar 29, 1991
Inventors
Ronald G. Hegg
Mao-Jin Chern
Assignee (at issue)
Hughes Aircraft Company
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.