Granted Patent
Utility
US 4,253,505 · App. 06/152,182
Valve control construction for a filling machine
Inventors:
Henry Sauer, Steven A. Lockhart
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: May 22, 1980
Inventors
Henry Sauer
Steven A. Lockhart
Assignee (at issue)
Jos. Schlitz Brewing Company
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.