Granted Patent
Utility
US 4,766,727 · App. 07/056,870
Fluid control valve
Inventors:
David A. Dull, Richard K. Taden
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Jun 1, 1987
Inventors
David A. Dull
Richard K. Taden
Assignee (at issue)
Dyneer 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.