Keyless drill chuck

Details Keyless drill chuck Keyless drill chuck

1990-10-19

1993-06-08

Douglas, Alan P.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

D15140

Patent

active

D03363058

REFERENCES:
patent: 3028168 (1962-04-01), Hughes et al.
patent: 4252333 (1981-02-01), Vogel
patent: 4275893 (1981-06-01), Bilanceri
patent: 4305597 (1981-12-01), McCarty
patent: 4527809 (1985-07-01), Umbert
patent: 4842288 (1989-06-01), Ando
patent: 4848779 (1989-07-01), Wheeler et al.

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