Granted Patent
Utility
US 4,489,508 · App. 06/417,729
Vapor condensation apparatus having condenser coil modules
Inventors:
Roy C. Carlson, Jr., Edward J. March
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Sep 13, 1982
Inventors
Roy C. Carlson, Jr.
Edward J. March
Assignee (at issue)
AT&T Technologies Incorporated
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.