Granted Patent
Utility
US 4,619,348 · App. 06/603,810
Combined hydropneumatic brake cylinder/air reservoir device with automatic double-acting slack adjuster arrangement
Inventor:
Eric G. Smith
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Apr 18, 1984
Inventor
Eric G. Smith
Assignee (at issue)
WABCO GmbH
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.