Granted Patent
Utility
US 4,263,421 · App. 06/075,552
Process for coating reactors using organic compound vapor application
Inventors:
Richard JONES, Donald E. Witenhafer
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Sep 14, 1979
Inventors
Richard JONES
Donald E. Witenhafer
Assignee (at issue)
B. F. Goodrich 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.