Granted Patent
Utility
US 4,379,971 · App. 06/205,146
Pyroelectric sensor
Inventors:
Peter Roland Smith, Charles E. Coleman
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Nov 10, 1980
Inventors
Peter Roland Smith
Charles E. Coleman
Assignee (at issue)
Statitrol, 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.