Granted Patent
Utility
US 5,188,519 · App. 07/728,461
Saturated fluid pumping apparatus
Inventor:
Ivars Sigurds Spulgis
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Jul 11, 1991
Inventor
Ivars Sigurds Spulgis
Assignee (at issue)
CVI Incorporated
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.