Granted Patent
Utility
US 5,543,977 · App. 07/843,740
Data recording system having improved longitudinal and helical search capability
Inventors:
Lionel C. Shih, Jerry E. Holter
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Feb 28, 1992
Inventors
Lionel C. Shih
Jerry E. Holter
Assignee (at issue)
Ampex Systems 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.