Granted Patent
Utility
US 4,147,327 · App. 05/807,281
Metallic seals for ball valve
Inventor:
George A. Moran
Patented Case
View Patent ↗
Granted: Apr 3, 1979
Filed: Jun 16, 1977
Inventor
George A. Moran
Assignee (at issue)
ACF Industries Incorporated
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.