Rock anchor

Details Rock anchor Rock anchor

1984-09-28

1986-12-30

Bullock, B. J.

Tools and hardware

Fastener, support or mount not elsewhere specified

Fastener or coupling

D 8356, D21255

Patent

active

D02874601

REFERENCES:
patent: D245224 (1977-08-01), Bowers
patent: D270365 (1983-08-01), Hawk
patent: 2863177 (1958-12-01), Nelson et al.
patent: 3937436 (1976-02-01), Stewart
patent: 4473332 (1984-09-01), Sturdy

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