Granted Patent
Utility
US 6,599,239 · App. 09/734,928
Flexible tube for endoscope, material used for producing outer cover of the flexible tube, and production method of the flexible tube
Inventors:
Shinji Hayakawa, Kensaku Ueki
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Dec 13, 2000
Inventors
Shinji Hayakawa
Kensaku Ueki
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.