Granted Patent
Utility
US 4,868,517 · App. 07/287,394
Variolosser
Inventors:
Fred Waldhauer, Carlos A. Baez
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Dec 20, 1988
Inventors
Fred Waldhauer
Carlos A. Baez
Assignee (at issue)
ReSound 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.