Evolution of wearable devices through patent drawings

A lire sur: http://www.techrepublic.com/pictures/evolution-of-wearable-devices-through-patent-drawings/1/

By Teena Hammond, June 2, 2014, 2:21 PM PST

• RSS

• 

PreviousNext

• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

PrevNext

Hearing aid patent from 1939

One of the most successful categories of electronic wearable devices is one that most people never think of - hearing aids. This patent was filed in 1939 and features a wearable bone-conduction hearing aid.

U.S. Patent number: 2249572

Filed: March 22, 1939, Publication date: July 15, 1941

Assignee: Dora Lieber, Lieber Patents Corp.