Calculator housing or similar article

Details Calculator housing or similar article Calculator housing or similar article

1988-05-10

1991-08-06

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Calculator

D18 6

Patent

active

D03188698

REFERENCES:
patent: D230859 (1974-03-01), Kurosu
patent: D243249 (1977-02-01), Hazama et al.
patent: D267411 (1982-12-01), Hirata et al.
patent: D268030 (1983-02-01), Ault
patent: D289527 (1987-04-01), Echols, Jr. et al.
patent: 4005388 (1977-01-01), Morley et al.
patent: 4220992 (1980-09-01), Blood et al.

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