Granted Patent
Utility
US 4,609,562 · App. 06/684,438
Apparatus and method for depositing coating onto porous substrate
Inventors:
Arnold O. Isenberg, Gregory E. Zymboly
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Dec 20, 1984
Inventors
Arnold O. Isenberg
Gregory E. Zymboly
Assignee (at issue)
Westinghouse Electric Company LLC
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.