Alexander Graham Bell (1847-1922)
Alexander Graham Bell, telephone pioneer
Alexander Graham Bell (1847-1922), Inventor of Telephone, Portrait
ALEXANDER GRAHAM BELL (1847-1922).
Alexander Graham Bell.
ALEXANDER GRAHAM BELL/n(1847-1922).
Alexander Graham Bell
Alexander Graham Bell, telephone inventor
Alexander Graham Bell 1921
ALEXANDER GRAHAM BELL
ALEXANDER GRAHAM BELL.
Alexander Graham Bell's photo phone.
ALEXANDER GRAHAM BEL
Alexander Graham Bell, Fine Art Portrait,
THOMAS EDISON (1847-1931).
Visitor to the Paris international Exhibition listening to a recording of Edison's Phonograph.
Visitors to the Paris international Exhibition listening to a recording of Edison's Phonograph.
GEORGE EASTMAN (1854-1932).
Row of file cabinets, with files in the drawers
ELECTRICAL EXPOSITION, 1881.
Office filing cabinet
A laptop on table
Bell telephone.
BELL'S TELEPHONE, c1920.
ファイル
Edison's phonometer
ripped open folder
Train dispatcher using a Morse key to send message down the line on the railway telegraph system.
Receiving a message on a Morse printing telegraph.
Carbon microphone, invented in 1878 by David Edward Hughes (1831-1900), English inventor
ELISHA GRAY (1835-1901).
Alexander Graham Bell's Dead Ear Phonautograph.
File folders on holder, close-up
HAND-HELD CALCULATOR, 1975.
A replica of Edison's light bulb
Joseph-Nicephore Niepce (1765 1833)
Close up of file on office desk
FILING CASE AD, 1887.
Gower-bell telephone.
Two businessmen discussing file in office
Two businesswomen
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As a crown to the success of his discovery of radio telegraphy Gugielmo Marconi, an Italian Engineer with some of the apparatus he used in 1898.
GUGLIELMO MARCONI
Edward HUGHES - 1830-1900 inventor of the microphone
A Bell telephone.
The first Bell telephone.
Surprised businessman
デスク
modern office wooden cabinet isolated on white background
modern office wooden bookcase isolated on white background
Agenda
Side view of the first model of Edison's phonograph.
An invention by Claude Chappe.
Electric printing telegraph invented by Hughes.
Guglielmo Marconi with his first radio
Home care nursing
机の上に置かれた書類とパソコン
TELEVISION PROJECTOR, 1930.
Alexander Graham Bell, Scottish-American inventor
ファイルを持つ女性シルエット
デスクイメージ
Public demonstration of Thomas Edison's Phonograph; Germany 1895.
Public demonstration of Thomas Edison's Phonograph.
Thomas Alva Edison, listening to a recording of his Phonograph.
Man, listening to a recording of Edison Phonograph.
New motorised, Edison Phonograph.
Edison Clockwork Phonograph.
Telegraph clerk receiving a message on a Morse sounding telegraph.
Receiving a message on a Morse telegraph General Post Office.
Folders
Alexander Graham Bell, Profile, circa 1920
Alexander Graham Bell, Portrait, circa 1920
Young woman with walking frame working in an office
Thomas Edison (1847-1931), with some Edison Effect lamps
PHONOGRAPH, 1860.
Man carrying file
Row of folders on shelf
Edison telephone in a wall-mounted box.
Edison carbon telephone
Edison carbon telephone.
Guglielmo Marconi (1874-1937)
Photographic portrait of Reginald Aubrey Fessenden
Thomas Alva Edison (1847-1931)
Row of folders on shelf, close-up
AD: PHONOGRAPH, 1901.
New York telephone subscriber making call
Alexander G. Bell, Scottish-US inventor
Ring binders
Office of the director.
観葉植物の隣でパソコン操作中に微笑むビジネススーツ姿の大人の男性一人