Welder qualification test coupon jig

Details Welder qualification test coupon jig Welder qualification test coupon jig

1991-09-25

1993-08-10

Douglas, Alan P.

Tools and hardware

Other tools and implements

Work or tool holder

Patent

active

D03381480

REFERENCES:
patent: D232153 (1974-07-01), Pepper
patent: 4281826 (1981-08-01), Calvert
patent: 4300754 (1981-11-01), Lawrence

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