Screw in fan

Details Screw in fan Screw in fan

2011-01-04

2011-01-04

Lichtenstein, Lisa P (Department: 2917)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0630312

CLAIM:
The ornamental design for a screw in fan, as shown and described.

REFERENCES:
patent: 785004 (1905-03-01), Kleem et al.
patent: 1222837 (1917-04-01), Winslow et al.
patent: 4098547 (1978-07-01), Wrobel
patent: D270942 (1983-10-01), McCain
patent: D283156 (1986-03-01), Mandelli
patent: 5287253 (1994-02-01), Blorstad
patent: 5586867 (1996-12-01), Mehlos
patent: D421797 (2000-03-01), Collmar
patent: 2005/0265848 (2005-12-01), Tseng

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