Heat exchanger
In the drawings, the broken lines represent the boundaries of the claimed design. The broken line boundaries and portions they enclose form no part of the claimed design.
The product “heat exchanger” is positioned within a boiler or burner such that after heating, the heat storage can facilitate the transfer of heat to the boiler or burner in a delayed and uniform manner.
Claims
I claim the ornamental design for heat exchanger, as shown and described.
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Type: Grant
Filed: Jan 8, 2015
Date of Patent: Aug 9, 2016
Inventor: Dhiti Towiwat (Bangkok)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Ania Aman
Application Number: 29/514,099