Exhaust stack

Details Exhaust stack Exhaust stack

2007-04-03

2007-04-03

Oliver, Catherine R. (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

29208025

CLAIM:
The ornamental design for an exhaust stack, as shown and described.

REFERENCES:
patent: D292312 (1987-10-01), Van Ee
patent: D327122 (1992-06-01), Holmgren
patent: D349763 (1994-08-01), Cromer
patent: D379501 (1997-05-01), Airosa et al.
patent: D487505 (2004-03-01), Grobleben
patent: 2001/0054234 (2001-12-01), Asta et al.

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