Granted Patent
Utility
US 4,274,701 · App. 05/881,013
Lockable contact socket for insertion into a plug connector
Inventors:
Johann Bannert, Guenter Nagel
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Feb 24, 1978
Inventors
Johann Bannert
Guenter Nagel
Assignee (at issue)
Siemens Aktiengesellschaft
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.