Granted Patent
Utility
US 4,803,583 · App. 07/039,558
Cleaning cassette with an internal drive motor
Inventor:
Michael Scott Bogdanski
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Apr 16, 1987
Inventor
Michael Scott Bogdanski
Assignee (at issue)
Nixdorf Computer AG
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.