Granted Patent
Utility
US 4,581,912 · App. 06/739,038
Apparatus for processing terminal ends of tubes
Inventors:
Takeshi Iritani, Matsuo Todaka, Mitsuo Yoshida
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: May 29, 1985
Inventors
Takeshi Iritani
Matsuo Todaka
Mitsuo Yoshida
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
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.