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чемпион

Патенты

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У нас тема была патенты? Можно тут сбрасывать.

http://www.findpatent.ru/img_show/952363.html

 

http://www.findpatent.ru/patent/223/2239550.html

 

http://www.findpatent.ru/patent/206/2064858.html

 

http://www.findpatent.ru/img_show/12077.html

 

и там путешествовать по теме.

 

 

 

 

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