Granted Patent
Utility
US 4,986,085 · App. 07/406,218
Incremental electrically actuated valve
Inventor:
James C. Tischer
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Sep 12, 1989
Inventor
James C. Tischer
Assignee (at issue)
American Standard Inc.
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.