Granted Patent
Utility
US 4,208,679 · App. 05/882,127
Transducer positioning system for rotating disk drive units
Inventor:
Friedrich R. Hertrich
Patented Case
View Patent ↗
Granted: Jun 17, 1980
Filed: Feb 28, 1978
Inventor
Friedrich R. Hertrich
Assignee (at issue)
Digital Equipment 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.