33
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
208704
18020
2
Public Timelines
Public TimelinesFAQ
Public TimelinesFAQ
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
Create
Create a timeline
Public timelines
Library
FAQ

mar 21, 1780 - Lentes Bifocales por Benjamin Franklin.

Description:

Lentes bifocales son lentes correctivas que contienen dos potencias diferentes.

Added to timeline:

Alexander Chicas 1°-K-ITSI

ByAlexander Rivas
31 Oct 2017
0
0
1071

Date:

mar 21, 1780
Now
~ 245 years ago

Images:

About & FeedbackTermsPrivacyLibraryFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL