Granted Patent
Utility
US 5,457,671 · App. 08/338,892
Method and circuit for correcting track zero crossing signal in optical track
Inventors:
Hidekazu Takata, Shigenori Yanagi
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Nov 14, 1994
Inventors
Hidekazu Takata
Shigenori Yanagi
Assignee (at issue)
Fujitsu Limited
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.