Granted Patent
Utility
US 4,413,671 · App. 06/374,570
Switchable on-off heat pipe
Inventor:
Algerd Basiulis
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: May 3, 1982
Inventor
Algerd Basiulis
Assignee (at issue)
Hughes Aircraft Company
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.