Granted Patent
Utility
US 4,821,167 · App. 07/020,308
Method and apparatus for sequential control of analogue signals
Inventor:
Harold D. Wiebe
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Mar 2, 1987
Inventor
Harold D. Wiebe
Assignee (at issue)
Cincinnatti Milacron 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.