Combined calculator and protective case

Details Combined calculator and protective case Combined calculator and protective case

1983-07-25

1986-03-25

Word, George P.

Printing and office machinery

Typewriter or calculator

Combined

D 3 301, D18 7, D18 11

Patent

active

D02831376

REFERENCES:
patent: D236488 (1975-08-01), Fossella
patent: D245455 (1977-08-01), Cathey
patent: D275822 (1984-10-01), Gatland et al.
patent: 4071065 (1978-01-01), Halbich
patent: 4259568 (1981-03-01), Dynesen
patent: 4322835 (1982-03-01), Ernst et al.
patent: 4424899 (1984-01-01), Rosenberg
patent: 4458813 (1984-07-01), Tushinsky et al.

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