Calculator with letter opener and tape dispenser

Details Calculator with letter opener and tape dispenser Calculator with letter opener and tape dispenser

2007-09-18

2007-09-18

Spear, Robert M. (Department: 2913)

Printing and office machinery

Typewriter or calculator

Calculator

Design Patent

active

29248657

CLAIM:
The ornamental design for a calculator with letter opener and tape dispenser, as shown and described.

REFERENCES:
patent: D165550 (1951-12-01), Prouty
patent: D255899 (1980-07-01), Karas et al.
patent: D279110 (1985-06-01), Takahashi
patent: D298042 (1988-10-01), Szablak et al.
patent: D302321 (1989-07-01), Charet et al.
patent: D342548 (1993-12-01), Kirchhoff et al.
patent: D351183 (1994-10-01), Ishiura
patent: D532706 (2006-11-01), Bhavnani
patent: D533213 (2006-12-01), Oas
patent: D533214 (2006-12-01), Oas
patent: D533894 (2006-12-01), Chan

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