Granted Patent
Utility
US 6,502,321 · App. 09/648,945
Pole section for surveying equipment
Inventors:
Stephen B. Crain, Ronnie D. Everly, Larry W. Essex, Ralph C. Mize, Jerry L. Williamson
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Aug 25, 2000
Inventors
Stephen B. Crain
Ronnie D. Everly
Larry W. Essex
Ralph C. Mize
Jerry L. Williamson
Assignee (at issue)
Crain Enterprises, Inc.
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.