Card-counting device

Details Card-counting device Card-counting device

1982-01-11

1984-10-02

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

D21 58

Patent

active

D02757389

REFERENCES:
patent: D258890 (1981-04-01), Uchida
patent: D266004 (1982-08-01), Onda
patent: D269628 (1983-07-01), Willette
patent: 3690670 (1972-09-01), Cassady

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