Hook for hanging plastic vent pipes

Tools and hardware – Fastener – support or mount not elsewhere specified – Support – guide – or spacer

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D 8367, D 8373

Patent

active

D03713032

REFERENCES:
patent: D27426 (1897-07-01), Walters et al.
patent: D28802 (1898-06-01), Thomas
patent: D32226 (1900-02-01), Dotson
patent: D32531 (1900-04-01), Stimmel
patent: D32640 (1900-05-01), Coleman
patent: 1769015 (1930-07-01), Carpenter
patent: 2104612 (1938-01-01), Droll
patent: 2423455 (1947-08-01), Larson
patent: 2641428 (1953-06-01), Kirk et al.
patent: 3032305 (1962-05-01), Mittenzwei
patent: 3216684 (1965-11-01), Larson
patent: 5005789 (1991-04-01), Jones
Hardware Age, Oct. 1984, p. 95, s-hook, located at bottom of page.
Piedmont Equipment Co. Catalog, 1984, p. 153, s-hook, located near bottom of page.
Photo of a hook for hanging pipes not known to be patented but known to be in public use. Mar. 19, 1995.

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