AU264682B2 - Improvements relating to validity checking arrangements adapted to perform valdity checks in respect of code signal conditions and to the use of such arrangements in telephone systems
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Improvements relating to validity checking arrangements adapted to perform valdity checks in respect of code signal conditions and to the use of such arrangements in telephone systems
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Associated Electrical Industries Ltd
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Associated Electrical Industries Ltd
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Publication of AU2677063ApublicationCriticalpatent/AU2677063A/en
AU26770/63A1962-02-051963-01-29Improvements relating to validity checking arrangements adapted to perform valdity checks in respect of code signal conditions and to the use of such arrangements in telephone systems
ExpiredAU264682B2
(en)
Improvements relating to validity checking arrangements adapted to perform valdity checks in respect of code signal conditions and to the use of such arrangements in telephone systems
Improvements relating to validity checking arrangements adapted to perform valdity checks in respect of code signal conditions and to the use of such arrangements in telephone systems