Concrete insert

Details Concrete insert Concrete insert

1993-06-04

1995-09-12

Shooman, Theodore M.

Tools and hardware

Fastener, support or mount not elsewhere specified

Fastener or coupling

Patent

active

D03621774

REFERENCES:
patent: 1045562 (1912-11-01), Kennedy
patent: 1136460 (1915-04-01), Wright
patent: 1264189 (1918-04-01), Keator
patent: 3293811 (1966-12-01), Rice
patent: 3391514 (1968-07-01), Hall, Jr.
patent: 4088361 (1978-05-01), Ditcher
patent: 4512121 (1985-04-01), Carydias et al.
patent: 4580378 (1986-04-01), Kelly et al.
patent: 4945704 (1990-08-01), Brown, Jr.
"Loop Design Light Duty Concrete Insert", Linn Brown & Associates, Inc., at least by May, 1992 (1 page).
Catalog PH-2 "Grinnel Pipe Hangers", Grinnel Supply Sales Company, at least by May, 1992 (Cover page and pp. ph-51 and ph-52).

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