Granted Patent
Utility
US 5,673,923 · App. 08/685,784
Split seal ring made of synthetic resin having crossed diverging ends
Inventors:
Tsutomu Watanabe, Tatsuei Sakata
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Jul 24, 1996
Inventors
Tsutomu Watanabe
Tatsuei Sakata
Assignee (at issue)
MITSUBISHI JIDOSHA KOGYO 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.