Granted Patent
Utility
US 5,774,271 · App. 08/681,894
Lamp assembly
Inventors:
William Lagerway, Jeffrey Perkins, Steven R. Slawson
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Jul 29, 1996
Inventors
William Lagerway
Jeffrey Perkins
Steven R. Slawson
Assignee (at issue)
Welch Allyn, 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.