Granted Patent
Utility
US 5,344,504 · App. 08/080,901
Treatment for galvanized metal
Inventors:
Philip D. Deck, Jeffrey I. Melzer, William L. Harpel
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Jun 22, 1993
Inventors
Philip D. Deck
Jeffrey I. Melzer
William L. Harpel
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.