Granted Patent
Utility
US 6,719,494 · App. 09/692,591
Cable and pipe burial apparatus and method
Inventor:
Jonathan B. Machin
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Oct 19, 2000
Inventor
Jonathan B. Machin
Assignee (at issue)
Coelexip, S.A.
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.