Granted Patent
Utility
US 5,227,938 · App. 07/675,912
High resolution magneto-optic read head
Inventors:
Joseph Colineau, Sophie Neubert
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: May 2, 1991
Inventors
Joseph Colineau
Sophie Neubert
Assignee (at issue)
Thomson-CSF
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.