Granted Patent
Utility
US 5,017,191 · App. 07/320,608
Injector
Inventors:
Hideo Yamada, Shozo Nakayama, Mitsuhisa Iinuma, Hisao Tobiki
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Mar 8, 1989
Inventors
Hideo Yamada
Shozo Nakayama
Mitsuhisa Iinuma
Hisao Tobiki
Assignee (at issue)
NIHON MEDI-PHYSICS CO., LTD.
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.