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