Granted Patent
Utility
US 4,405,544 · App. 06/348,824
Strengthening of carbon black-teflon-containing electrode
Inventor:
Frank Solomon
Patented Case
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Granted: Sep 20, 1983
Filed: Feb 16, 1982
Inventor
Frank Solomon
Assignee (at issue)
Diamond Shamrock Corporation
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.