Granted Patent
Utility
US 4,863,102 · App. 07/272,281
CVD torch
Inventor:
Philip S. Levin
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Dec 19, 1988
Inventor
Philip S. Levin
Assignee (at issue)
Spectrian 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.