Bridge calculator

Details Bridge calculator Bridge calculator

2007-03-13

2007-03-13

Spear, Robert M. (Department: 2913)

Printing and office machinery

Typewriter or calculator

Calculator

Design Patent

active

29244425

CLAIM:
The ornamental design for a bridge calculator, as shown and described.

REFERENCES:
patent: D350747 (1994-09-01), McClendon
patent: D360139 (1995-07-01), Pistilli
patent: D371571 (1996-07-01), Gobbo et al.
patent: D390836 (1998-02-01), Takahashi
patent: D396559 (1998-08-01), Mullen
patent: D398627 (1998-09-01), Leung
patent: D406142 (1999-02-01), Meurer
patent: D424604 (2000-05-01), Leung
patent: D429272 (2000-08-01), Chu
patent: D429273 (2000-08-01), Maree et al.
patent: D473145 (2003-04-01), Chang
patent: D501870 (2005-02-01), Hsu

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