Granted Patent
Utility
US 4,843,503 · App. 07/133,946
Head arm damping device for disc drive actuators
Inventors:
Henry Hazebrouck, Joseph T. Castagna
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Dec 17, 1987
Inventors
Henry Hazebrouck
Joseph T. Castagna
Assignee (at issue)
Priam 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.