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on 14 May 2024
Helix Power Corporation
97416679 · 18 May 2022
007
"POWER",Machine flywheels for storing and discharging energy that feat...
on 20 Nov 2019
Helix Power Corporation
87843678 · 21 Mar 2018
007
Electromagnetically-operated machine flywheels for energy management a...
on 04 Oct 2019
Helix Power Corporation
88223514 · 10 Dec 2018
007
The mark consists of a stylized circle with breaks in top and bottom. ...
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