Who patented the phonograph in 1878 (after developing and demonstrating it the previous year)?

0 votes

165 views

posted Feb 27, 2017 by Mridul

Looking for an answer? Promote on:

Your comment on this post:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Anti-spam verification:

To avoid this verification in future, please log in or register.

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

Anti-spam verification:

To avoid this verification in future, please log in or register.