Granted Patent
Utility
US 4,483,908 · App. 06/537,565
Intumescent material-coated galvanic cells
Inventor:
Herman M. Zimmerman
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Sep 30, 1983
Inventor
Herman M. Zimmerman
Assignee (at issue)
Union Carbide 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.