Roof insulation washer

Details Roof insulation washer Roof insulation washer

1979-11-07

1982-04-20

Bullock, B. J.

Tools and hardware

Fastener, support or mount not elsewhere specified

Fastener or coupling

D 8354, D0808

Patent

active

D02639270

REFERENCES:
patent: D236428 (1975-08-01), Stewart
patent: D236790 (1975-09-01), Bruno et al.
patent: 3090203 (1963-05-01), Durget
patent: 4112693 (1978-09-01), Collin

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