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Gustaf Lambert
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Publication of GB190202701ApublicationCriticalpatent/GB190202701A/en
Coupling Device And Connection With Printed Circuit
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Abstract
2701. Lambert, G. Feb. 3. Switches. - Telephone j jacks are made with extra a springs b arranged with contacts d to b e a r against the plug sleeves i so as to make electric contact independently of the contact between the plug and socket.
GB190202701D1902-02-031902-02-03Improvements in Telephone Line Jacks.
ExpiredGB190202701A
(en)