Granted Patent
Utility
US 4,337,469 · App. 05/864,438
Ink liquid supply system for ink jet system printer
Inventors:
Rikuo Takano, Yuji Sumitomo
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Dec 27, 1977
Inventors
Rikuo Takano
Yuji Sumitomo
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
SHARP 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.