Granted Patent
Utility
US 4,283,438 · App. 06/106,793
Method for individually encapsulating magnetic particles
Inventor:
Lawrence L. Lee
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Dec 26, 1979
Inventor
Lawrence L. Lee
Assignee (at issue)
Magnavox Government and Industrial Electronics Company
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.