Granted Patent
Utility
US 6,478,339 · App. 09/936,529
Displacement absorbing piping joint
Inventors:
Yoichi Abe, Shoichi Kameta, Katsuhiko Hagiwara, Shunji Kawabata, Takafumi Oshima
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Dec 5, 2001
Inventors
Yoichi Abe
Shoichi Kameta
Katsuhiko Hagiwara
Shunji Kawabata
Takafumi Oshima
Assignee (at issue)
New Tokyo International Airport Authority
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.