Granted Patent
Utility
US 5,431,802 · App. 08/128,705
Cylinder tube and process for producing same
Inventors:
Minobu Sukimoto, Tatsuo Otsuka, Masaaki Ooide, Masakazu Shimaguchi, Akira Sakayori
Patented Case
View Patent ↗
Granted: Jul 11, 1995
Filed: Sep 30, 1993
Inventors
Minobu Sukimoto
Tatsuo Otsuka
Masaaki Ooide
Masakazu Shimaguchi
Akira Sakayori
Assignee (at issue)
Showa Aluminum Corp.
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.