Ventilation grill

Details Ventilation grill Ventilation grill

2000-11-07

2002-03-12

Siegel, Mitchell (Department: 2912)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Design Patent

active

D0454391

CLAIM:
The ornamental design for the ventilation grill, as shown and described.

REFERENCES:
patent: 805247 (1905-11-01), Thompson
patent: D358205 (1995-05-01), Ruhland
patent: D438948 (2001-03-01), Schrank

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