IT1235462B - Individual telephone system to be applied to public telephones
- Google Patents
Individual telephone system to be applied to public telephones
Info
Publication number
IT1235462B
IT1235462BIT8946305AIT4630589AIT1235462BIT 1235462 BIT1235462 BIT 1235462BIT 8946305 AIT8946305 AIT 8946305AIT 4630589 AIT4630589 AIT 4630589AIT 1235462 BIT1235462 BIT 1235462B
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valerio MaiolifiledCriticalValerio Maioli
Priority to IT8946305ApriorityCriticalpatent/IT1235462B/en
Publication of IT8946305A0publicationCriticalpatent/IT8946305A0/en
Application grantedgrantedCritical
Publication of IT1235462BpublicationCriticalpatent/IT1235462B/en
This invention is used to make phone calls at specially equipped public phone booths. The phone booth's handset is not used. Instead the call is made using a small portable battery operated short distance microtelephone with an infrared transceiver.
IT8946305A1989-07-031989-07-03Individual telephone system to be applied to public telephones
IT1235462B
(en)