Granted Patent
Utility
US 5,993,913 · App. 09/046,949
Method and apparatus for spraying waterborne coatings under varying conditions
Inventors:
Mary Ellen Rosenberger, Donald B. Jones
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Mar 24, 1998
Inventors
Mary Ellen Rosenberger
Donald B. Jones
Assignee (at issue)
PPG Industries Ohio, 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.