Granted Patent
Utility
US 6,282,750 · App. 09/419,420
Power adjustment size indicator for a door closer
Inventors:
Arthur E. Bishop, Mark Frederick Braunlich, Thomas H. Blanford, Michael R. Wasielewski
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Oct 15, 1999
Inventors
Arthur E. Bishop
Mark Frederick Braunlich
Thomas H. Blanford
Michael R. Wasielewski
Assignee (at issue)
Ingersoll-Rand Architectural Hardware Limited
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.