Granted Patent
Utility
US 5,584,312 · App. 08/343,702
Fire damper for ceiling diffuser
Inventor:
Robert M. Van Becelaere
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Nov 21, 1994
Inventor
Robert M. Van Becelaere
Assignee (at issue)
Tomkins Industries, 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.