Slotted I-beam

Details Slotted I-beam Slotted I-beam

2008-05-27

2008-05-27

Clark, Doris (Department: 2914)

Building units and construction elements

Architectural stock material

Extruded shape

CD25S121000

Design Patent

active

D0569997

CLAIM:
The ornamental design for a slotted I-beam, as shown and described.

REFERENCES:
patent: 1377891 (1921-05-01), Knight
patent: 4005941 (1977-02-01), Laborde
patent: 4159604 (1979-07-01), Burrell
patent: 4285095 (1981-08-01), Janson
patent: 4584809 (1986-04-01), Stanford
patent: 5233807 (1993-08-01), Spera
patent: 5634300 (1997-06-01), Huebner et al.
patent: 5930966 (1999-08-01), Wood et al.
patent: D518900 (2006-04-01), Barnett
patent: 2003/0205019 (2003-11-01), Becker et al.
patent: 2005/0284078 (2005-12-01), Marsland

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