Granted Patent
Utility
US 5,378,299 · App. 08/043,441
Method of making a balloon with flat film valve
Inventors:
John McGrath, Dennis Allen Cope, Scott C. Harris, Charles Becker
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Apr 5, 1993
Inventors
John McGrath
Dennis Allen Cope
Scott C. Harris
Charles Becker
Assignee (at issue)
M & D Balloons, 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.