Granted Patent
Utility
US 5,141,588 · App. 07/633,737
Laterally stabilized inflatable bead turn-up bladder for tire building drum
Inventor:
William VanBuskirk
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Dec 24, 1990
Inventor
William VanBuskirk
Assignee (at issue)
Bridgestone Firestone
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.