Granted Patent
Utility
US 4,167,296 · App. 05/866,117
Protective control system for magnetic suspension and magnetically suspended devices
Inventor:
Joe B. Dendy
Patented Case
View Patent ↗
Granted: Sep 11, 1979
Filed: Dec 30, 1977
Inventor
Joe B. Dendy
Assignee (at issue)
Sperry Rand 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.