![](https://nthumb.tpgimages.com/mid2_com_img/16166/26278/TOP25302415.jpg)
An engraving depicting Martin's electromechanical clock, showing the pendulum and electromagnetic drive which replaced a weight or mainspring. Dated 20th century
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Details
Creative#:
TOP25302415
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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