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DEVICE FOR TESTING KEYBOARD OF TELEGRAPH APPARATUS
DEVICE FOR TESTING KEYBOARD OF TELEGRAPH APPARATUS
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机译:电报设备键盘测试装置
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摘要
the invention относитс to telegraphy.the device contains a pulse generator 1, an electronic distributor 2, a binary counter (dc) 3, block amplifiers power to the electromagnet 4, uh лементы and 5 and
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