Granted Patent
Utility
US 4,416,071 · App. 06/264,745
Apparatus for rapid annealing of refractory fiber bodies
Inventors:
Richard N. Cunningham, Romain E. Loeffler, deceased
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: May 18, 1981
Inventors
Richard N. Cunningham
Romain E. Loeffler, deceased
Assignee (at issue)
Manville Service 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.