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Summary
| Description |
English: First External Rotor Motor by Emil Ziehl, patent drawing, US patent 662,484 (November 27, 1900).
Deutsch: Patentzeichnung des ersten Außenläufermotors, US-Patent 662 484 (Electric Top For Gyroscopes) erteilt am 27. November 1900 an Emil Ziehl. |
| Date | |
| Source | US 662484 (Google Patents) |
| Author | Emil Ziehl |
| Other versions | de:File:Al zeichnung.jpg |
Licensing
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The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:53, 10 August 2013 | | 1,850 × 2,150 (75 KB) | Torana | {{Information |Description ={{en|1=First ''External Rotor Motor'' by Emil Ziehl, patent drawing, US patent 662,484 (November 27, 1900).}} {{de|1=Patentzeichnung des ersten Außenläufermotors, US-Patent 662 484 (''Electric... |
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