Granted Patent
Utility
US 4,497,031 · App. 06/401,632
Direct digital control apparatus for automated monitoring and control of building systems
Inventors:
Paul H. Froehling, Jude R. Anders, Lawrence J. Strojny, James M. Rehberger
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Jul 26, 1982
Inventors
Paul H. Froehling
Jude R. Anders
Lawrence J. Strojny
James M. Rehberger
Assignee (at issue)
Johnson Service 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.