Patent
   D985743
Priority
Mar 31 2021
Filed
Aug 23 2021
Issued
May 09 2023
Expiry
May 09 2038
Assg.orig
Entity
unknown
0
8
n/a
The ornamental design for an air heater, as shown and described.

FIG. 1 is a left side elevational view of the air heater showing our design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front perspective view thereof.

The broken lines in FIGS. 4 and 5 show portions of the air heater that form no part of the claimed design.

Plank, Patrick, Warkiewicz, Adam

Patent Priority Assignee Title
Patent Priority Assignee Title
105999,
D421296, Dec 19 1997 LIMPSFIELD COMBUSTION LTD Burner
D573703, Sep 11 2007 TUTCO LLC Heater
D604399, Feb 01 2008 Leister Technologies AG Air heater
D617434, Feb 01 2008 Leister Technologies AG Air heater
D661385, Oct 18 2010 Leister Technologies AG Air heater
D743015, Feb 06 2014 Leister Technologies AG Hot air device
D743016, Feb 06 2014 Leister Technologies AG Hot air device
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 17 2021WARKIEWICZ, ADAMLeister Technologies AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0572620927 pdf
Aug 18 2021PLANK, PATRICKLeister Technologies AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0572620927 pdf
Aug 23 2021Leister Technologies AG(assignment on the face of the patent)
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