Granted Patent
Utility
US 4,969,812 · App. 07/358,438
Fluid pressure operated apparatus for mounting a differential pressure mold on a platen
Inventor:
Gaylord W. Brown
Patented Case
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Granted: Nov 13, 1990
Filed: May 30, 1989
Inventor
Gaylord W. Brown
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.