Granted Patent
Utility
US 4,139,547 · App. 05/906,877
Silicone containing bis-thioether aromatic amines
Inventor:
Abe Berger
Patented Case
View Patent ↗
Granted: Feb 13, 1979
Filed: May 17, 1978
Inventor
Abe Berger
Assignee (at issue)
Bergston & Associates, Inc.
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.