Granted Patent
Utility
US 5,324,166 · App. 07/737,225
Apparatus and method for pumping a liquid
Inventors:
Jorma Elonen, Kaj Henricson, Heikki Manninen
Patented Case
View Patent ↗
Granted: Jun 28, 1994
Filed: Jul 29, 1991
Inventors
Jorma Elonen
Kaj Henricson
Heikki Manninen
Assignee (at issue)
A. Ahlstrom / A Finnish Corporation
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.