Granted Patent
Utility
US 5,647,840 · App. 08/306,268
Endoscope having a distally heated distal lens
Inventors:
Frank D'Amelio, Carl J. Rebert, Kenneth C. Hancock
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Sep 14, 1994
Inventors
Frank D'Amelio
Carl J. Rebert
Kenneth C. Hancock
Assignee (at issue)
Circon Corporation
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.