Granted Patent
Utility
US 4,738,530 · App. 06/883,969
Inspection device
Inventors:
Francis E. Ryder, Richard Rabenau, Rowland W. Kanner
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Jul 10, 1986
Inventors
Francis E. Ryder
Richard Rabenau
Rowland W. Kanner
Assignee (at issue)
National Patent Development 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.