Granted Patent
Utility
US 5,013,336 · App. 07/431,289
Method and apparatus for emission control
Inventors:
Timothy W. Kempf, Robert F. Corcoran, Jr., Dennis C. Sikora
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Nov 3, 1989
Inventors
Timothy W. Kempf
Robert F. Corcoran, Jr.
Dennis C. Sikora
Assignee (at issue)
Aluminum Company of America
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.