Granted Patent
Utility
US 4,153,076 · App. 05/858,807
Pneumatic valve apparatus
Inventors:
Roderick J. McNeil, Burleigh M. Hutchins
Patented Case
View Patent ↗
Granted: May 8, 1979
Filed: Dec 8, 1977
Inventors
Roderick J. McNeil
Burleigh M. Hutchins
Assignee (at issue)
WATERS GMBH
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.