Granted Patent
Utility
US 4,674,579 · App. 06/709,046
Method and apparatus for installment of underground utilities
Inventors:
Edward W. Geller, Mike Kirby, John E. Mercer, Tom O'Hanlon, Jim Reichman, Ken Theimer, Robert A. Svendsen
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Mar 7, 1985
Inventors
Edward W. Geller
Mike Kirby
John E. Mercer
Tom O'Hanlon
Jim Reichman
Ken Theimer
Robert A. Svendsen
Assignee (at issue)
FlowMole Corporation
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.