Granted Patent
Utility
US 4,603,270 · App. 06/614,354
Particle free linear motor
Inventor:
Peter C. Van Davelaar
Patented Case
View Patent ↗
Granted: Jul 29, 1986
Filed: May 25, 1984
Inventor
Peter C. Van Davelaar
Assignee (at issue)
Ampex 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.