Granted Patent
Utility
US 4,861,222 · App. 06/587,860
Cassette elevator for use in a modular article processing machine
Inventor:
Ninko T. Mirkovich
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Mar 9, 1984
Inventor
Ninko T. Mirkovich
Assignee (at issue)
TEGAL 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.