Granted Patent
Utility
US 4,440,485 · App. 06/458,374
Apparatus for continuously automatically processing a plurality of dental X-ray films
Inventors:
Robert Maldonado, Raymond A. Erickson
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jan 17, 1983
Inventors
Robert Maldonado
Raymond A. Erickson
Assignee (at issue)
Pennwalt 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.