Carbon microphone, invented in 1878 by David Edward Hughes (1831-1900), English inventor. From R. Wormell Electricity in the Service of ManLondon, 1890. Engraving

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Details

Creative#:

TOP09099629

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

Model Release:

NO

Property Release:

NO

Right to Privacy:

No

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