Granted Patent
Utility
US 4,716,409 · App. 06/886,249
Electrical appliance control system
Inventors:
Edward Hart, William B. McDonough
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Jul 16, 1986
Inventors
Edward Hart
William B. McDonough
Assignee (at issue)
Homestead Products, 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.