Chalk box

Details Chalk box Chalk box

1999-08-13

2000-08-15

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

1004

Patent

active

D04294718

REFERENCES:
patent: D345513 (1994-03-01), Syrett
patent: 5432510 (1995-07-01), Matthews

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