Granted Patent
Utility
US 5,604,196 · App. 08/456,778
Nonflammable mild odor solvent cleaner with (m)ethyl lactate and propylene glycol propyl ether
Inventors:
Henry J. Weltman, Tony L. Phillips
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Jun 1, 1995
Inventors
Henry J. Weltman
Tony L. Phillips
Assignee (at issue)
Lockheed 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.