Granted Patent
Utility
US 4,892,548 · App. 06/454,993
Joint socket
Inventors:
Gino Niederer, Otto Frey
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Jan 3, 1983
Inventors
Gino Niederer
Otto Frey
Assignees (at issue)
Gebrueder Sulzer Aktiengesellschaft
PROTEK, INC.
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.