Granted Patent
Utility
US 4,874,922 · App. 07/277,732
Granule vise for manufacturing a magnetic head core with a glass fillet adjacent the inner edge of the gap
Inventors:
Timothy W. Vadnais, Douglas J. Hennenfent
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Nov 30, 1988
Inventors
Timothy W. Vadnais
Douglas J. Hennenfent
Assignee (at issue)
Impris Technology Incorporated
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.