Formwork for forming concrete columns

Details Formwork for forming concrete columns Formwork for forming concrete columns

2010-07-13

2011-11-15

Clark, Doris (Department: 2914)

Building units and construction elements

Architectural stock material

Post or beam

Design Patent

active

D0648866

CLAIM:
The ornamental design for a formwork for forming concrete columns, as shown and described.

REFERENCES:
patent: 3542914 (1970-11-01), Lavergne, Jr.
patent: 3945601 (1976-03-01), Rowley
patent: 4854542 (1989-08-01), Pruett
patent: 4887789 (1989-12-01), Harris et al.
patent: 5255888 (1993-10-01), Workman
patent: 6668511 (2003-12-01), Xammar
patent: D583081 (2008-12-01), Ryan
patent: D616115 (2010-05-01), Clayton
patent: 00142780-0001 (2009-07-01), None
patent: 00142780-0002 (2009-07-01), None
patent: 00142780-0003 (2009-07-01), None

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