Ruler/template/mathematical aid

Details Ruler/template/mathematical aid Ruler/template/mathematical aid

1999-10-18

2001-01-09

Davis, Antoine Duval (Department: 2913)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Design Patent

active

D0436048

CLAIM:
The ornamental design for ruler/template/mathematical aid, as shown and described.

REFERENCES:
patent: D. 311872 (1990-11-01), Young
patent: D. 317131 (1991-05-01), Kwan
patent: 56226 (1970-03-01), None
patent: 56227 (1970-03-01), None
patent: 74706 (1978-09-01), None
patent: S-102966 (1986-12-01), None
patent: S-99132 (1987-06-01), None
patent: C-106392 (1989-01-01), None
patent: S-133479 (1998-03-01), None
patent: S-137243 (1999-04-01), None

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