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Patent Grant
Tumbling magnet electricity generating system
Patent number
7,023,122
Issue date
Apr 4, 2006
Qin Gang
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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last 30 patents
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Patent Application
Tumbling magnet electricity generating system
Publication number
20060001323
Publication date
Jan 5, 2006
Qin Gang
G04 - HOROLOGY