Granted Patent
Utility
US 6,554,850 · App. 09/654,521
Endoscopic biopsy forceps
Inventors:
Teruo Ouchi, Masaru Nagamine
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Sep 1, 2000
Inventors
Teruo Ouchi
Masaru Nagamine
Assignee (at issue)
Pentax 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.