Search
Images
Maps
Play
YouTube
News
Gmail
Drive
More
»
Advanced Patent Search
|
Web History
|
Sign in
Advanced Patent Search
Patents
www.google.com
http://www.google.com/patents/US161739?utm_source=gb-gplus-share
Patent US161739 - IMPROVEMENT IN TRANSMITTERS AND RECEIVERS FOR ELECTRIC TELEGRAPHS
IMPROVEMENT IN TRANSMITTERS AND RECEIVERS FOR ELECTRIC TELEGRAPHS
LEXANDEE GEAHAM BELL
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 161739
Filing date
: Mar 6, 1875
Issue date
: Apr 6, 1875
Inventor
:
LEXANDEE GEAHAM BELL
Original Assignee
:
HIMSELF AND THOMAS
Current U.S. Classification
:
178/17.00B
;
178/48
;
178/49
;
307/140
View patent at USPTO
Search USPTO Assignment Database
Drawings
Drawings
