Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Receber premium

Create a timeline

Public timelines

About & Feedback Acordo Privacidade FAQ

Cabinet Get premium

Donate

13 jun 1947 ano - Trackball patent

Descrição:

The trackball patent was accepted, however it was kept as a miliry secret

Adicionado na linha do tempo:

Computer mice

29 set 2017

0

0

636

Data:

13 jun 1947 ano

Agora

~ 78 years ago

About & Feedback Acordo Privacidade FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL