Granted Patent
Utility
US 4,337,140 · App. 06/202,876
Strengthening of carbon black-teflon-containing electrodes
Inventor:
Frank Solomon
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Oct 31, 1980
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.