Granted Patent
Utility
US 4,304,066 · App. 06/040,860
Apparatus for coupling and uncoupling toy truck tractors and semitrailers
Inventors:
Derek A. Brand, Derek Brand
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: May 21, 1979
Inventors
Derek A. Brand
Derek Brand
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.