Granted Patent
Utility
US 6,540,669 · App. 09/942,720
Flexible tube for an endoscope and electronic endoscope equipped with the flexible tube
Inventors:
Masanao Abe, Shinji Hayakawa, Kikuo Iwasaka, Minoru Matsushita
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Aug 31, 2001
Inventors
Masanao Abe
Shinji Hayakawa
Kikuo Iwasaka
Minoru Matsushita
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.