Cov txheej txheem:

Leej twg xub tsim lub xov tooj?
Leej twg xub tsim lub xov tooj?
Anonim

Lub xov tooj yog cov khoom siv sib txuas lus uas tso cai rau ob lossis ntau tus neeg siv los sib tham thaum lawv nyob deb dhau los mloog ncaj qha.

Lub xov tooj thawj zaug tau tsim thaum twg?

Hnub yog Lub Ob Hlis 14, 1876. Nws yog qhov thib tsib nkag ntawm hnub ntawd, thaum Grey tus kws lij choj yog 39th. Yog li ntawd, US Patent Office tau muab Tswb nrog thawj patent rau xov tooj, US Patent Number 174, 465 es tsis hwm Grey's caveat.

Vim li cas Alexander Graham Bell tsim lub xov tooj?

Thomas A. Watson, ib tug ntawm Tswb tus pab, tau sim rov qhib lub xov tooj xa xov tooj. Thaum hnov lub suab, Tswb ntseeg hais tias nws yuav daws tau qhov teeb meem ntawm kev xa tib neeg lub suab hla ib tug hlau. Nws xav paub yuav ua li cas xa ib qho yooj yim tam sim no ua ntej, thiab tau txais patent rau qhov kev tsim khoom thaum Lub Peb Hlis 7, 1876.

Leej twg tsim lub xov tooj thaum xyoo 1800?

The San Francisco Hu (San Francisco, CA), Image 22. Chronicling America: Historic American Newspapers. Thaum Lub Peb Hlis 7, 1876, Alexander Graham Tswbtau txais daim ntawv patent rau xov tooj thiab tau txais txoj cai rau kev tshawb pom. Hnub tom qab, nws tau hu xov tooj rau nws tus khub, Thomas Watson thawj zaug.

Elisha Grey puas tsim lub xov tooj?

Elisha Grey (Lub Yim Hli 2, 1835 - Lub Ib Hlis 21, 1901) yog ib tug kws tshaj lij Asmeskas hluav taws xob uas tau koom nrog Western Electric Manufacturing Company. Grey paub zoo tshaj plaws rau nws txoj kev loj hlob ntawm tus qauv xov tooj hauv xyoo 1876 hauv Highland Park, Illinois.

Pom zoo: