Granted Patent
Utility
US 5,170,673 · App. 07/590,194
Method and apparatus for determining the uncovered size of an opening adapted to be covered by multiple moveable doors
Inventors:
Osman Ahmed, Steven A. Bradley, Steven L. Fritsche
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Sep 28, 1990
Inventors
Osman Ahmed
Steven A. Bradley
Steven L. Fritsche
Assignee (at issue)
Landis & Gyr Powers, 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.