Granted Patent
Utility
US 4,648,215 · App. 06/786,136
Method and apparatus for forming a high velocity liquid abrasive jet
Inventors:
Mohamed A. Hashish, Michael J. Kirby, Yih-Ho Michael Pao
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Oct 7, 1985
Inventors
Mohamed A. Hashish
Michael J. Kirby
Yih-Ho Michael Pao
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.