Granted Patent
Utility
US 4,988,471 · App. 07/407,898
Apparatus and method of forming a continuous layer of thermoplastic material
Inventors:
Eugenio Millevoi, Paul S. Brydel
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Sep 15, 1989
Inventors
Eugenio Millevoi
Paul S. Brydel
Assignee (at issue)
Sano Co., Ltd.
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.