Granted Patent
Utility
US 6,515,806 · App. 09/794,365
Eyepiece attachment structure for observation optical instrument
Inventor:
Atsushi Denpo
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Feb 28, 2001
Inventor
Atsushi Denpo
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.