Granted Patent
Utility
US 4,435,902 · App. 06/216,910
Articulated boom water jet cutting apparatus
Inventors:
John E. Mercer, John H. Olsen, Stephen Michael Elkins
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Dec 16, 1980
Inventors
John E. Mercer
John H. Olsen
Stephen Michael Elkins
Assignee (at issue)
Flow Industries, Ltd.
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.