Granted Patent
Utility
US 4,450,772 · App. 06/343,126
Tender-mounted sound system for toy steam locomotive
Inventor:
James R. Van Sickle
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Jan 27, 1982
Inventor
James R. Van Sickle
Assignee (at issue)
CPG Products Corp.
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.