Heat transfer machine
The broken lines in the drawings are employed to show unclaimed portions of the heat transfer machine, and form no part of the claimed design.
Claims
The ornamental design for a heat transfer machine, as shown and described.
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Type: Grant
Filed: Nov 4, 2020
Date of Patent: Nov 9, 2021
Inventor: Zhi-Gang Cheng (Shaoshan)
Primary Examiner: Patricia A Palasik
Application Number: 29/757,217