Granted Patent
Utility
US 6,767,262 · App. 10/449,170
Marine gas cylinder apparatus
Inventors:
Shinsuke Sekikawa, Yoshimi Watanabe, Minoru Toya
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: May 30, 2003
Inventors
Shinsuke Sekikawa
Yoshimi Watanabe
Minoru Toya
Assignee (at issue)
SHOWA CORPORATION
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.