Ductwork clamp

Details Ductwork clamp Ductwork clamp

1992-04-24

1993-12-07

Douglas, Alan P.

Tools and hardware

Other tools and implements

Work or tool holder

Patent

active

D03420060

REFERENCES:
patent: D286369 (1986-10-01), Hahn
patent: D321633 (1991-11-01), Rigney
patent: 2970798 (1961-02-01), Fritchle et al.
patent: 3861663 (1975-01-01), Strickland
patent: 4600174 (1986-07-01), Gosse
patent: 4838584 (1989-06-01), Dierksmeier
patent: 4889299 (1989-12-01), Sarton

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