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/ 24
35 bulbs

35 bulbs

Sylvania Electric Products, Inc.
20th Century
35mm Prado slide projector

35mm Prado slide projector

Ernst Leitz (company)
1950-1960
35mm Prado slide projector

35mm Prado slide projector

Ernst Leitz (company)
1950-1960
accessory parts for Coulter counter and Coulter channelyzer

accessory parts for Coulter counter and Coulter channelyzer

Coulter Electronics, Inc.
circa 1972
ac du power supply

ac du power supply

Beckman Instruments, Inc.
after 1940
AT&T receiver

AT&T receiver

Western Electric Company
1895-1899
AT&T receiver

AT&T receiver

Western Electric Company
circa 1900
balance weights

balance weights

German
circa 1920
Beckmann thermometer

Beckmann thermometer

Corning
1900-1920
Bell #10 deskset ringer box

Bell #10 deskset ringer box

Western Electric Company
1897-1898
Bell #10 deskset ringer box

Bell #10 deskset ringer box

Western Electric Company
circa 1897
Bell transmitter

Bell transmitter

Western Electric Company
1898
/ 24

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The Collection of Historical Scientific Instruments
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