Granted Patent
Utility
US 4,468,712 · App. 06/280,139
Positioner apparatus for tape recorder heads
Inventors:
Joseph H. Mueller, Ronald G. Dawson, Samuel N. Irwin
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Jul 2, 1981
Inventors
Joseph H. Mueller
Ronald G. Dawson
Samuel N. Irwin
Assignee (at issue)
Irwin International, 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.