Granted Patent
Utility
US 4,148,579 · App. 05/821,279
Automatic microfilm camera
Inventors:
Donald J. Axelrod, John R. Flint
Patented Case
View Patent ↗
Granted: Apr 10, 1979
Filed: Aug 3, 1977
Inventors
Donald J. Axelrod
John R. Flint
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.