Refractory block

Details Refractory block Refractory block

2008-04-29

2008-04-29

Davis, Antoine D. (Department: 2915)

Machines not elsewhere specified

Material working, abrading, or founding machinery

Deforming or crushing

Design Patent

active

D0567829

CLAIM:
The ornamental design for the refractory block, as shown as described.

REFERENCES:
patent: D198114 (1964-04-01), Hall
patent: 3181278 (1965-05-01), Jones
patent: 3346248 (1967-10-01), Martinet et al.
patent: 4069633 (1978-01-01), Cooper et al.
patent: 5117604 (1992-06-01), Bly et al.
patent: 5647185 (1997-07-01), Forlini
patent: 5704781 (1998-01-01), Swoboda
patent: D403437 (1998-12-01), Risi et al.
patent: D516734 (2006-03-01), Keys et al.
patent: 2005/0252145 (2005-11-01), MacDonald et al.

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