Granted Patent
Utility
US 4,585,618 · App. 06/580,532
Cermets and their manufacture
Inventors:
Jean-Marie Fresnel, Pierre E. Debely, Jean-Pierre Waefler
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Feb 15, 1984
Inventors
Jean-Marie Fresnel
Pierre E. Debely
Jean-Pierre Waefler
Assignee (at issue)
Eltech Systems 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.