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17 gen 1891 anni - Primer calentador de agua solar fue patentado en 1891 por Clarence Kemp.

Aggiunto al nastro di tempo:

ENERGIA SOLAR

ByLizbeth Monzon

31 ott 2017

0

0

689

Data:

17 gen 1891 anni

Adesso

~ 134 years ago

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