Granted Patent
Utility
US 6,228,003 · App. 09/042,755
Adjustable dumbbell and system
Inventors:
Patrick Hald, William T. Dalebout, F. Troy Miller
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Mar 17, 1998
Inventors
Patrick Hald
William T. Dalebout
F. Troy Miller
Assignee (at issue)
ICON Health & Fitness, Inc.
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.