Granted Patent
Utility
US 4,408,111 · App. 06/267,955
Internal locking arrangement for a switch machine
Inventors:
Gerold Domhan, Franz HARTL, Kurt Vogelgsang
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: May 28, 1981
Inventors
Gerold Domhan
Franz HARTL
Kurt Vogelgsang
Assignee (at issue)
International Standard Electric 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.