Drill for concrete

Details Drill for concrete Drill for concrete

1997-08-22

1999-10-26

Davis, Antoine Duval

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

1509

Patent

active

D04157745

REFERENCES:
patent: D390239 (1998-02-01), Mulin
patent: 3478639 (1969-11-01), Gruca
patent: 5074728 (1991-12-01), Hsu
patent: 5413444 (1995-05-01), Thomas et al.

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