Granted Patent
Utility
US 4,642,062 · App. 06/751,437
Nose weight for toy aircraft
Inventor:
Michael K. Dorffler
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Jul 3, 1985
Inventor
Michael K. Dorffler
Assignee (at issue)
Damon 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.