Granted Patent
Utility
US 6,316,892 · App. 09/321,640
Automatic door control system
Inventor:
Gilbert Valencia
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: May 28, 1999
Inventor
Gilbert Valencia
Assignee (at issue)
NT Dor-O-Matic, 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.