Granted Patent
Utility
US 4,326,591 · App. 06/121,432
Soil coring implement
Inventor:
Jerry Dedoes
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Feb 14, 1980
Inventor
Jerry Dedoes
Assignee (at issue)
Dedoes Industries, 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.