Related
Thomas Edison - Public domain portrait photograph
Thomas Edison, Glass negative portrait, 1870s
Edison Ad Ca 1900 Bis printed advertisement, United States
T.A. Edison - Public domain print
Edison Dictaphone - A black and white photo of a man sitting at a desk
Thomas Edison, Glass negative portrait, 1870s
Thomas Edison, Thomas Edison national historical park
Thomas Edison, Glass negative portrait, 1870s
Thomas Edison, Thomas Edison national historical park
Edisonsfirstpatent
Summary
Electrographic Vote-Recorder, Thomas Edison's first patent. Permitted a "yes" or "no" vote via one of two switches. Washington congressmen were not interested in the device and the invention was a failure. (1869)中文（臺灣）：電子投票紀錄器，湯瑪斯·愛迪生的第一項專利，經由裝置上的開關「是」與「否」立即進行投票。當時美國國會的參眾兩會議員對於這個裝置完全不感興趣，由於傳統投票方法可以臨時改變其他議員的投票結果，這項裝置不利於議員的政治利益，也可以算是一項失敗的發明。
Tags
patent drawings
united states
patents by thomas alva edison
uspto
technical drawing
patent application
Date
01/06/1869
Source
U.S. Patent 0,090,646
Link
Copyright info
Public Domain