IT997635B - Perfezionamento nei sistemi telefonici
- Google Patents
Perfezionamento nei sistemi telefonici
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Publication number
IT997635B
IT997635BIT5389173AIT5389173AIT997635BIT 997635 BIT997635 BIT 997635BIT 5389173 AIT5389173 AIT 5389173AIT 5389173 AIT5389173 AIT 5389173AIT 997635 BIT997635 BIT 997635B
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Application filed by Gai Tronics CorpfiledCriticalGai Tronics Corp
Priority to IT5389173ApriorityCriticalpatent/IT997635B/it
Application grantedgrantedCritical
Publication of IT997635BpublicationCriticalpatent/IT997635B/it