Granted Patent
Utility
US 5,000,565 · App. 07/442,005
Optical rangerfinder with through the viewfinder readout
Inventor:
Thomas E. Hughes
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Nov 28, 1989
Inventor
Thomas E. Hughes
Assignee (at issue)
Crosman Corporation
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.