Granted Patent
Utility
US 4,647,994 · App. 06/589,146
Miniaturized cartridge-type tape drive for data processors
Inventors:
Samuel N. Irwin, Francis Lum, Michael L. Bolt, Steven E. Henke, Edmund L. Sokolik, John M. Chambors
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Mar 13, 1984
Inventors
Samuel N. Irwin
Francis Lum
Michael L. Bolt
Steven E. Henke
Edmund L. Sokolik
John M. Chambors
Assignee (at issue)
Irwin Magnetic Systems, 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.