Granted Patent
Utility
US 4,424,518 · App. 06/256,917
Column dot formation in an ink jet system printer of the charge amplitude controlling type
Inventors:
Hitoshi Suzuki, Fumio Togawa, Mitsuhiro Hakaridani
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Apr 23, 1981
Inventors
Hitoshi Suzuki
Fumio Togawa
Mitsuhiro Hakaridani
Assignee (at issue)
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.