Granted Patent
Utility
US 5,811,136 · App. 08/755,329
Screw-in-plunger injection apparatus
Inventors:
Ryozo Morita, Tadashi Hasegawa, Yoshimitsu Tabata, Shigemi Kushida, Shinichi Nakamura
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Nov 21, 1996
Inventors
Ryozo Morita
Tadashi Hasegawa
Yoshimitsu Tabata
Shigemi Kushida
Shinichi Nakamura
Assignees (at issue)
KABUSHIKI KAISHA MEIKI SEISAKUSHO
ARONKASEI 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.