Granted Patent
Utility
US 5,610,794 · App. 08/430,571
Door holder having electromagnetic flux generator and power control circuit
Inventors:
William P. Dye, Paul J. Hoggard
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Apr 28, 1995
Inventors
William P. Dye
Paul J. Hoggard
Assignee (at issue)
Von Duprin LLC
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.