33
/fr/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
5202709
491465
2
Public Timelines
Menu
Public Timelines
FAQ
Public Timelines
FAQ
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
Créer
Close
Create a timeline
Public timelines
Library
FAQ
1 janv. 1888 - 1888 Cement bifocals patented by US optometrist August Morck but Samuel Gregg had the idea earlier in 1866
Ajouté au bande de temps:
The development of optometry through the ages
By
Christian Pot
10 avr. 2021
0
0
766
Date:
1 janv. 1888
Maintenaint
~ Il y a 137 ans
About & Feedback
Un accord
Confidentialité
Bibliothèque
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
