Detecting folds or doubles

Full Title

Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency > Testing mechanical properties or condition, e.g. wear or tear > Detecting folds or doubles

Classification Context

Section:

PHYSICS

Class:

CHECKING-DEVICES

Subclass:

HANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING