Granted Patent
Utility
US 4,834,020 · App. 07/128,806
Atmospheric pressure chemical vapor deposition apparatus
Inventors:
Lawrence D. Bartholomew, Nicholas Gralenski, Michael A. Richie, Michael L. Hersh
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Dec 4, 1987
Inventors
Lawrence D. Bartholomew
Nicholas Gralenski
Michael A. Richie
Michael L. Hersh
Assignee (at issue)
Watkins-Johnson Company, 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.