Cash register attachment for screening keys

Details Cash register attachment for screening keys Cash register attachment for screening keys

1979-02-26

1981-10-13

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Element or attachment

D18 4, D19 59, D1899

Patent

active

D02612763

REFERENCES:
patent: 772130 (1904-10-01), Chandler
patent: 799099 (1905-09-01), Smith
patent: 918283 (1909-04-01), Chrisman
patent: 974394 (1910-11-01), Kendrick
patent: 1078537 (1913-11-01), Corcoran
patent: 1246221 (1917-11-01), Baumgartner
patent: 1389419 (1921-08-01), Briggs
patent: 1673724 (1923-06-01), Vickers
patent: 3505745 (1970-04-01), Carlisle

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