Granted Patent
Utility
US 4,436,196 · App. 06/274,765
Method of and apparatus for assessing coins
Inventors:
Malcolm Crisp, Christopher Mark Lewis
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Jun 18, 1981
Inventors
Malcolm Crisp
Christopher Mark Lewis
Assignee (at issue)
Plessey Overseas Limited
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.