Ladder hinge

Details Ladder hinge Ladder hinge

2011-01-25

2011-01-25

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

Design Patent

active

D0631562

CLAIM:
The ornamental design for a ladder hinge, as shown and described.

REFERENCES:
patent: 5026198 (1991-06-01), Lin
patent: 7093321 (2006-08-01), Burbrink et al.
patent: D553757 (2007-10-01), Moss et al.

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