Jaw insert for power tongs

Details Jaw insert for power tongs Jaw insert for power tongs

1987-10-15

1991-02-26

Holtje, Nelson C.

Tools and hardware

Other tools and implements

Wrench

D 8 61

Patent

active

D03148963

REFERENCES:
patent: D29767 (1898-12-01), Vaughan
patent: D187745 (1960-04-01), Bird
patent: D287928 (1987-01-01), Watanabe
patent: 2150611 (1939-03-01), Speck
patent: 2166449 (1939-07-01), Sharpe
patent: 2558440 (1951-06-01), Johnson
patent: 2733624 (1956-02-01), Dowidat
patent: 3916735 (1975-11-01), Evans
Aero Space America, 6/1985, inside back cover, Wrench.

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