Scaffolding coupling pin

Details Scaffolding coupling pin Scaffolding coupling pin

1986-04-07

1989-08-01

Bullock, B. J.

Tools and hardware

Fastener, support or mount not elsewhere specified

Fastener or coupling

Patent

active

D03025209

REFERENCES:
patent: D224996 (1972-10-01), Putterman
patent: 2758379 (1956-08-01), Senk
patent: 3000656 (1961-09-01), Hollaender
patent: 3120941 (1964-02-01), Cameron
patent: 3190405 (1965-06-01), Squire
patent: 3346283 (1967-10-01), Squire
patent: 3395501 (1968-08-01), Davidson, Jr. et al.
patent: 3527320 (1970-09-01), Cunningham
patent: 3747689 (1973-07-01), Frederick
patent: 3759623 (1973-09-01), Hesse
patent: 4090798 (1978-05-01), Barton
patent: 4236846 (1980-12-01), Barton
patent: 4586844 (1986-05-01), Hammonds
GKN Kwikform, Inc. "Aluminium Step & Span Access System" brochure (undated).
GKN Kwikform, Inc. "Kwiktower Safety and Assembly Instructions" brochure (undated).
GKN Kwikform, Inc. "The Aluminum Stairway & Span Scaffolding System" brochure (undated).
Photographs of cast coupling pin labeled AR-1, AR-2 and AR-3 (undated).

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