Granted Patent
Utility
US 4,916,597 · App. 07/319,047
Lighthead assembly
Inventors:
Leonard L. Hallings, Donald W. Bramer, Bruce A. Sanborn
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Mar 6, 1989
Inventors
Leonard L. Hallings
Donald W. Bramer
Bruce A. Sanborn
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.