Granted Patent
Utility
US 5,956,249 · App. 08/807,024
Method for electromechanical control of the operational parameters of a door in conjunction with a mechanical door control mechanism
Inventors:
Mark A. Beran, Davide Andrea
Patented Case
View Patent ↗
Granted: Sep 21, 1999
Filed: Feb 26, 1997
Inventors
Mark A. Beran
Davide Andrea
Assignee (at issue)
Dorma Door Controls, 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.