Granted Patent
Utility
US 4,615,224 · App. 06/764,230
Air sampling system for smoke detection
Inventors:
Grant M. Smith, Samuel R. Romania, Vladimir M. Tamarkin
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Aug 9, 1985
Inventors
Grant M. Smith
Samuel R. Romania
Vladimir M. Tamarkin
Assignee (at issue)
Burroughs, 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.