Granted Patent
Utility
US 4,789,637 · App. 06/912,713
Acid complexed acetylenic compounds useful as environmental indicating materials
Inventors:
Anthony F. Preziosi, Thaddeus Prusik
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Sep 29, 1986
Inventors
Anthony F. Preziosi
Thaddeus Prusik
Assignee (at issue)
LifeLines Technology, 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.