File:Savonius rotor patent cover sheet.png

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Description
English: Original cover sheet of the Savonius rotor finish patent.
Deutsch: Original Deckblatt des finnischen Patents für den Savonius-Rotor.
Date
Source http://www.prh.fi/stc/attachments/innogalleria/Nayttelyposterit_Savonius.pdf
Author Sigurd Savonius

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21 December 2011

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current10:04, 21 December 2011Thumbnail for version as of 10:04, 21 December 2011540 × 843 (369 KB)XXLRay

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