Granted Patent
Utility
US 4,533,620 · App. 06/519,443
Light sensitive co-condensates
Inventors:
John E. Walls, Thomas A. Dunder
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Aug 2, 1983
Inventors
John E. Walls
Thomas A. Dunder
Assignee (at issue)
American Hoechst 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.