BE354594A - - Google Patents

Info

Publication number

BE354594A

BE354594A BE354594DA BE354594A BE 354594 A BE354594 A BE 354594A BE 354594D A BE354594D A BE 354594DA BE 354594 A BE354594 A BE 354594A

Authority

BE

Belgium

Prior art keywords

relay

armature

telephone system

pulses

circuit

Prior art date

Links

• Espacenet
• Global Dossier
• Discuss

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