Granted Patent
Utility
US 5,482,121 · App. 08/154,305
Vibratory cable plow assembly
Inventors:
Robert G. Draney, James W. Donoghue, Mark D. Bird, David W. Beatenbough
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Nov 18, 1993
Inventors
Robert G. Draney
James W. Donoghue
Mark D. Bird
David W. Beatenbough
Assignee (at issue)
Case GmbH
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.