Granted Patent
Utility
US 4,164,367 · App. 05/814,933
Film transport system for microfilm reader
Inventor:
Edward R. Wadleigh
Patented Case
View Patent ↗
Granted: Aug 14, 1979
Filed: Jul 12, 1977
Inventor
Edward R. Wadleigh
Assignee (at issue)
Bell and Howell, LLC
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.