Granted Patent
Utility
US 6,259,971 · App. 08/885,253
Portable fuel-cell-powered system with ultrasonic atomization of H2O by-product
Inventors:
Nathan Mitchell, Joseph F. Freiman
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Jun 30, 1997
Inventors
Nathan Mitchell
Joseph F. Freiman
Assignee (at issue)
Compaq Computer 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.