Granted Patent
Utility
US 4,977,342 · App. 07/339,028
Electromagnetic vibration generators
Inventor:
Anthony Adams
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Apr 17, 1989
Inventor
Anthony Adams
Assignee (at issue)
Ling Dynamic Systems, Inc.
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.