Calculator rule

Details Calculator rule Calculator rule

2005-09-27

2005-09-27

Davis, Antoine D. (Department: 2915)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Design Patent

active

D0510042

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

REFERENCES:
patent: D271025 (1983-10-01), Li
patent: D279381 (1985-06-01), Leung
patent: D283515 (1986-04-01), Li
patent: D284199 (1986-06-01), Li
patent: D286161 (1986-10-01), Wong
patent: D384366 (1997-09-01), Millstone et al.

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