Screw

Details Screw Screw

1989-05-09

1992-01-07

Bullock, B. J.

Tools and hardware

Fastener, support or mount not elsewhere specified

Fastener or coupling

D 8388, D 8391, D 8397

Patent

active

D03229289

REFERENCES:
patent: D126409 (1941-04-01), Trott
patent: D243317 (1977-02-01), Fukuyama
patent: 2764886 (1956-10-01), Wiesmann
patent: 2940495 (1960-06-01), Wing
patent: 4242932 (1981-01-01), Barmore
John Hassall, Inc. Cat.; .COPYRGT.1937; p. 18; Threaded Fastener (lower right).

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