Granted Patent
Utility
US 4,411,880 · App. 06/378,980
Process for disposing of carbon fibers
Inventor:
Christopher B. Brogna
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: May 17, 1982
Inventor
Christopher B. Brogna
Assignee (at issue)
Celanese GmbH
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.