Granted Patent
Utility
US 4,504,395 · App. 06/577,905
Paint spray booth detackification composition and method
Inventors:
William L. Harpel, Richard J. Pilny
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Feb 7, 1984
Inventors
William L. Harpel
Richard J. Pilny
Assignee (at issue)
Betz Laboratories, 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.