Granted Patent
Utility
US 4,725,478 · App. 06/772,515
Heat-miniaturizable printed circuit board
Inventors:
Eckart Mathias, William Alfred Feehley, Jr.
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Sep 4, 1985
Inventors
Eckart Mathias
William Alfred Feehley, Jr.
Assignee (at issue)
W. R. Grace & Co.
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.