Granted Patent
Utility
US 5,632,192 · App. 08/574,611
Spring brake actuator with indicator for fully released condition
Inventors:
Ronald S. Plantan, Emmett S. Davis
Patented Case
View Patent ↗
Granted: May 27, 1997
Filed: Dec 19, 1995
Inventors
Ronald S. Plantan
Emmett S. Davis
Assignee (at issue)
INDIAN HEAD INDUSTRIES, 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.