Granted Patent
Utility
US 4,517,751 · App. 06/505,409
Azeotropic drying process
Inventors:
Steven L. Ross, Otto H. Tachovsky
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Jun 17, 1983
Inventors
Steven L. Ross
Otto H. Tachovsky
Assignee (at issue)
Federal Signal 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.