Granted Patent
Utility
US 4,650,825 · App. 06/731,125
Production of inorganic fiber products
Inventors:
Karl Jellinek, Rolf Muller, Gerhard Wisomirski
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: May 6, 1985
Inventors
Karl Jellinek
Rolf Muller
Gerhard Wisomirski
Assignee (at issue)
Rutgerswerke Aktiengesellschaft
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.