Lever block

Details Lever block Lever block

1997-06-25

1999-03-23

Douglas, Alan P.

Material or article handling equipment

Conveying, lifting, or transferring article

Crane or hoist

D34 28, 1205

Patent

active

D04071751

REFERENCES:
patent: D152123 (1948-12-01), Parker
patent: D220772 (1971-05-01), Hawkins et al.
patent: D315976 (1991-04-01), Shieh
patent: D377555 (1997-01-01), Ueno
patent: 2100674 (1937-11-01), Stahl
patent: 5765891 (1998-06-01), Fredriksson

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