Granted Patent
Utility
US 6,089,952 · App. 09/014,499
Four wheel drive toy locomotive
Inventors:
Paul Dowd, Will Isaksson, Donald E. Toht, Jeff Katz
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Jan 28, 1998
Inventors
Paul Dowd
Will Isaksson
Donald E. Toht
Jeff Katz
Assignee (at issue)
Learning Curve International 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.