Granted Patent
Utility
US 5,448,439 · App. 07/908,283
Rotary head and cylindrical drum tape guide assembly for tape record and reproduce apparatus
Inventors:
Steven L. Magnusson, Abraham Eshel
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Jul 1, 1992
Inventors
Steven L. Magnusson
Abraham Eshel
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.