Granted Patent
Utility
US 6,694,866 · App. 10/012,607
High output spring brake actuator
Inventors:
Teddy D. Smith, Michael D. Stubblefield
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Oct 22, 2001
Inventors
Teddy D. Smith
Michael D. Stubblefield
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.