Granted Patent
Utility
US 4,909,317 · App. 07/201,819
Condenser, hermetic sealing, high and low temperature resistant
Inventors:
Sean Johnson, Nancy K. Roberts, Richard P. Lutz, Jr.
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Jun 3, 1988
Inventors
Sean Johnson
Nancy K. Roberts
Richard P. Lutz, Jr.
Assignee (at issue)
General Dynamics Corporation, Pomona Div.
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.