Granted Patent
Utility
US 4,720,590 · App. 06/453,431
[2,2,2-trihalo-1-(trihalomethyl)]ethylidene-bisbenzenethiols
Inventors:
Thomas W. Giants, Thomas K. Dougherty
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Dec 27, 1982
Inventors
Thomas W. Giants
Thomas K. Dougherty
Assignee (at issue)
Hughes Aircraft 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.