Granted Patent
Utility
US 4,951,929 · App. 07/334,861
Refractory assembly including inner and outer refractory members with interference shrink fit therebetween and method of formation thereof
Inventors:
Hans G. Schwarz, Vinay Shah, Bernhard Schiefer
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Apr 6, 1989
Inventors
Hans G. Schwarz
Vinay Shah
Bernhard Schiefer
Assignee (at issue)
Didier-Taylor Refractories Corporation
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.