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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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1 jan 1888 ano - 1888 Cement bifocals patented by US optometrist August Morck but Samuel Gregg had the idea earlier in 1866
Adicionado na linha do tempo:
The development of optometry through the ages
By
Christian Pot
10 abr 2021
0
0
766
Data:
1 jan 1888 ano
Agora
~ 137 years ago
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