Granted Patent
Utility
US 4,819,769 · App. 07/039,224
Brake disc device
Inventors:
Horst Metzler, Guenther Schwarz
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Apr 17, 1987
Inventors
Horst Metzler
Guenther Schwarz
Assignee (at issue)
Schwaebische Huettenwerke Gesellschaft mit beschraenkter Haftung
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.