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Manual relay systems
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Industry
CPC
H04L12/60
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Parent Industries
H
ELECTRICITY
H04
Electric communication
H04L
TRANSMISSION OF DIGITAL INFORMATION
H04L12/00
Data switching networks
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H04L12/60
Manual relay systems
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Patents Grants
last 30 patents
Information
Patent Grant
2396286
Patent number
2,396,286
Issue date
Mar 12, 1946
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
CPC
H04L12/60
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