Granted Patent
Utility
US 4,636,774 · App. 06/549,987
Variable sensitivity motion detector
Inventors:
Aaron A. Galvin, James B. Edson, John K. Guscott
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 8, 1983
Inventors
Aaron A. Galvin
James B. Edson
John K. Guscott
Assignee (at issue)
American District Telegraph Company
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.