Granted Patent
Utility
US 4,928,211 · App. 07/319,046
Lighthead assembly
Inventors:
Leonard L. Hallings, Donald W. Bramer, Bruce A. Sanborn, James E. Schryver
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Mar 6, 1989
Inventors
Leonard L. Hallings
Donald W. Bramer
Bruce A. Sanborn
James E. Schryver
Assignee (at issue)
MDT CO.,LTD.
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.