File:USPTO 4002499.jpg
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Parabolic trough concentrating solar collector
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:49, 27 October 2008 | | 635 × 635 (79 KB) | Rasmus (talk | contribs) | Parabolic trough concentrating solar collector |
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