Granted Patent
Utility
US 4,029,440 · App. 05/667,380
High pressure fluid intensifier and method
Inventor:
John H. Olsen
Patented Case
View Patent ↗
Granted: Jun 14, 1977
Filed: Mar 16, 1976
Inventor
John H. Olsen
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.