Granted Patent
Utility
US 4,302,283 · App. 06/183,439
Sizing process and composition
Inventors:
Sidney M. Blitzer, Harry D. Wilder
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Sep 2, 1980
Inventors
Sidney M. Blitzer
Harry D. Wilder
Assignee (at issue)
Ethyl 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.