Granted Patent
Utility
US 4,031,814 · App. 05/654,033
Self-centering spring actuated auxiliary brake mechanism
Inventors:
Robert Lukens, Stanley Jaksim
Patented Case
View Patent ↗
Granted: Jun 28, 1977
Filed: Feb 2, 1976
Inventors
Robert Lukens
Stanley Jaksim
Assignee (at issue)
Indian Head, 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.