Granted Patent
Utility
US 4,712,441 · App. 06/733,633
Position controlled linear actuator
Inventor:
William Abraham
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: May 13, 1985
Inventor
William Abraham
Assignee (at issue)
Brunswick Valve & Control, 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.