Granted Patent
Utility
US 4,865,593 · App. 07/210,606
Splittable cannula
Inventors:
Masaki Ogawa, Nobuyoshi Fujiwara
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Jun 23, 1988
Inventors
Masaki Ogawa
Nobuyoshi Fujiwara
Assignee (at issue)
Sherwood Medical Company
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.