Patent for Multiple Telephone Switchboards Granted

Posted on January 17, 2013 by GilPress

Today in 1882, U.S. Patent No. 252, 576 for a “a new system for multiple [telephone] switchboards” was granted to Leroy B. Firman.

For more on telephone switchboards, see here and here and here.

About GilPress

I launched the Big Data conversation; writing, research, marketing services; http://whatsthebigdata.com/ & https://infostory.com/

This entry was posted in Automation, Patents, Telephone. Bookmark the permalink.