Granted Patent
Utility
US 4,166,478 · App. 05/862,863
Accumulator having a bladder to be filled with liquid
Inventors:
Nobuyuki Sugimura, Kazuo Sugimura
Patented Case
View Patent ↗
Granted: Sep 4, 1979
Filed: Dec 21, 1977
Inventors
Nobuyuki Sugimura
Kazuo Sugimura
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.