Granted Patent
Utility
US 4,374,070 · App. 06/209,350
Preparation of acetic anhydride
Inventors:
Thomas H. Larkins, Jr., Stanley W. Polichnowski, Gerald Charles Tustin, David A. Young
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Nov 21, 1980
Inventors
Thomas H. Larkins, Jr.
Stanley W. Polichnowski
Gerald Charles Tustin
David A. Young
Assignee (at issue)
EASTMAN KODAK COMPANY
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.