Combined chisel and pick tool head

Details Combined chisel and pick tool head Combined chisel and pick tool head

1987-10-05

1989-07-25

Dunkins, Bruce W.

Tools and hardware

Other tools and implements

Combination tool

D 8 47, D 8 76

Patent

active

D03023818

REFERENCES:
patent: D256322 (1980-08-01), Zabarte
patent: 895370 (1908-08-01), Hendershot et al.
patent: 3712659 (1973-01-01), Kneissl
patent: 4669342 (1987-06-01), Wilson
Hammacher-Schlemmer Hardware, Tools & Supplies Catalog, p. 586, two, top left tool heads/Des. Library.
Nupla Manufacturing Co. advertising brochure, item marked #4.

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