Granted Patent
Utility
US 4,455,496 · App. 06/352,284
Electromagnetic vibratory exciter
Inventors:
Arthur L. Dean, Robert E. Kraft, Kenneth M. Marshall
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Feb 25, 1982
Inventors
Arthur L. Dean
Robert E. Kraft
Kenneth M. Marshall
Assignee (at issue)
FMC 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.