Granted Patent
Utility
US 4,765,661 · App. 07/031,182
Union joint assembly
Inventors:
Koji Fukushima, Isamu Sasaki
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Mar 30, 1987
Inventors
Koji Fukushima
Isamu Sasaki
Assignees (at issue)
Diesel Kiki Co., Ltd.
Mitoyo Industries Co., Ltd.
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.