Granted Patent
Utility
US 5,975,429 · App. 08/997,230
High pressure fluid apparatus for blast cleaning
Inventor:
Paul D. Jezek
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Dec 23, 1997
Inventor
Paul D. Jezek
Assignee (at issue)
J. Edward Stachowiak
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.