Concrete bridge and headwall unit

Details Concrete bridge and headwall unit Concrete bridge and headwall unit

2005-12-06

2005-12-06

Clark, Doris (Department: 2914)

Building units and construction elements

Structure

Design Patent

active

D0512513

CLAIM:
The ornamental design of a concrete bridge and headwall unit, as shown and described.

REFERENCES:
patent: D47171 (1915-03-01), Smith
patent: D356163 (1995-03-01), Ryan
patent: 5590433 (1997-01-01), Fricke
patent: 6719492 (2004-04-01), Heierli

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