Granted Patent
Utility
US 4,281,636 · App. 06/046,459
Steam processor
Inventors:
Elmer S. Vegh, Donald F. Klier, Davis S. Schwerzler, William F. Castle
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Jun 7, 1979
Inventors
Elmer S. Vegh
Donald F. Klier
Davis S. Schwerzler
William F. Castle
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.