Granted Patent
Utility
US 4,419,933 · App. 06/307,633
Apparatus and method for selectively activating plural electrical loads at predetermined relative times
Inventors:
Ian J. Kirby, Michael I. Mitchell, Andrew J. Stratton
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Oct 1, 1981
Inventors
Ian J. Kirby
Michael I. Mitchell
Andrew J. Stratton
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.