Granted Patent
Utility
US 4,901,910 · App. 07/329,122
Perfluorinated propyl derivative compounds for vapor bath soldering
Inventors:
Frank K. Schweighardt, Webb I. Bailey, John T. Lileck, John K. Graybill, Eugene George Lutz
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Mar 27, 1989
Inventors
Frank K. Schweighardt
Webb I. Bailey
John T. Lileck
John K. Graybill
Eugene George Lutz
Assignee (at issue)
Air Products and Chemicals, 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.