Granted Patent
Utility
US 4,310,477 · App. 05/781,374
Method of making a silicon nitride part
Inventors:
James C. Uy, Andre Ezis
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Mar 25, 1977
Inventors
James C. Uy
Andre Ezis
Assignee (at issue)
Ford Motor Company
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.