Granted Patent
Utility
US 5,450,913 · App. 08/130,665
Continuous soil sampling system and method
Inventors:
Larry C. Mefferd, Floyd R. Mefferd
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Oct 1, 1993
Inventors
Larry C. Mefferd
Floyd R. Mefferd
Assignee (at issue)
Gold Star Manufacturing, 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.