Granted Patent
Utility
US 4,437,140 · App. 06/433,729
Printed circuit device
Inventors:
Sadahiro Ohyama, Hiroshi Kato, Sadao Yaguchi, Mikito Baba, Morikazu Okada
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Oct 12, 1982
Inventors
Sadahiro Ohyama
Hiroshi Kato
Sadao Yaguchi
Mikito Baba
Morikazu Okada
Assignee (at issue)
MITSUMI ELECTRIC 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.