Granted Patent
Utility
US 4,193,849 · App. 05/886,826
Method for making a raw board for use in printed circuits
Inventor:
Junichi Sato
Patented Case
View Patent ↗
Granted: Mar 18, 1980
Filed: Mar 15, 1978
Inventor
Junichi Sato
Assignee (at issue)
Nippon Mining Company Limited
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.