Granted Patent
Utility
US 4,238,557 · App. 05/898,488
Lead acid battery plate with starch coated glass fibers
Inventors:
Heinrich Schulte, Werner Kirchhoff
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Apr 20, 1978
Inventors
Heinrich Schulte
Werner Kirchhoff
Assignee (at issue)
Varta Batterie A.G.
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.