Granted Patent
Utility
US 4,499,031 · App. 06/423,536
Evaporative gas treating system
Inventors:
Robert W. Sexton, Richard L. Smith
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Sep 27, 1982
Inventors
Robert W. Sexton
Richard L. Smith
Assignee (at issue)
Allis-Chalmers 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.