Granted Patent
Utility
US 5,872,419 · App. 08/923,652
Piezoelectric transformer with voltage feedback
Inventors:
Dale G. Hall, James R. Phillips, Gary Vaughn, Donald W. Forst, Harold W. Mech
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Sep 4, 1997
Inventors
Dale G. Hall
James R. Phillips
Gary Vaughn
Donald W. Forst
Harold W. Mech
Assignee (at issue)
Motorola, 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.