Air heater

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Description

FIG. 1 is a rear perspective view of a first embodiment of an air heater showing our new design.

FIG. 2 is a front perspective view of the air heater of FIG. 1.

FIG. 3 is a top view of the air heater of FIG. 1.

FIG. 4 is a rear perspective view of a second embodiment of an air heater showing our new design.

FIG. 5 is a front perspective view of the air heater of FIG. 4; and,

FIG. 6 is a top view of the air heater of FIG. 4.

Claims

The ornamental design for an air heater, as shown and described.

Referenced Cited
U.S. Patent Documents
D105364 July 1937 Herr
D105999 September 1937 Morgan
D163671 June 1951 Beckett
D405170 February 2, 1999 Haeck
D573703 July 22, 2008 Gosselin et al.
Patent History
Patent number: D604399
Type: Grant
Filed: Feb 1, 2008
Date of Patent: Nov 17, 2009
Assignee: Leister Process Technologies (Sarnen)
Inventors: Rolf Aregger (Ebikon), Lukas Gisler (Alpnach Dorf)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Ania K Dworzecka
Attorney: Bachman & LaPointe, P.C.
Application Number: 29/303,112