Granted Patent
Utility
US 4,739,937 · App. 07/008,474
Apparatus for conditioning granular material
Inventors:
James H. Carpenter, Jerry L. Godwin, Donald G. Corderman, Haven L. Keller
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Jan 29, 1987
Inventors
James H. Carpenter
Jerry L. Godwin
Donald G. Corderman
Haven L. Keller
Assignee (at issue)
Pangborn 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.