Document counter

Details Document counter Document counter

1977-02-02

1979-06-12

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

D64 11R, D1004

Patent

active

D02520745

REFERENCES:
patent: D164125 (1951-07-01), O'Neil
patent: D233936 (1974-12-01), Jones
patent: 2131912 (1938-10-01), Brand
patent: 2492577 (1949-12-01), Janke
patent: 2805825 (1957-09-01), Jurgensen
patent: 3214096 (1965-10-01), Buchholz
Office Appliances-3/65-p. 74-Machine at center.

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