Granted Patent
Utility
US 5,172,922 · App. 07/691,630
Self aligning vacuum nozzle
Inventors:
Kelli Kowaleski, Yuen-Foo Michael Kou, Gary D. Roberts
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Apr 25, 1991
Inventors
Kelli Kowaleski
Yuen-Foo Michael Kou
Gary D. Roberts
Assignee (at issue)
Digital Equipment 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.