Granted Patent
Utility
US 5,951,939 · App. 08/903,520
Method for heating films for thermoforming
Inventors:
Zinoviy Chernyak, Jeffery K. Christensen
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Jul 30, 1997
Inventors
Zinoviy Chernyak
Jeffery K. Christensen
Assignee (at issue)
Ford Motor Company
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.