Granted Patent
Utility
US 4,407,921 · App. 06/320,064
Electrophotographic elements with polyester binder resins having aprotic end groups
Inventors:
Everett W. Bennett, Jan B. Suchy
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Nov 10, 1981
Inventors
Everett W. Bennett
Jan B. Suchy
Assignee (at issue)
James River Graphics Limited
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.