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2016-5-6 19:58:13
- Electric bicycle History
- In the 1890s, electric bicycles were documented within various U.S. patents. For example, on 31 December 1895, Ogden Bolton Jr. was granted U.S. Patent 552,271 for a battery-powered bicycle with “6-pole brush-and-commutator direct current (DC) hub motor m >>
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2016-5-4 16:48:03
- CONTACT US
- NBPOWER GROUP
- Add: Mingsai Industrial Building, 801 Wujin District,Changzhou, Jiangsu, China
- Tel：0519-86055585
- E-mail：info@nbpowers.com
- Skype: nbpowers
