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BE476597A
(enrdf_load_stackoverflow)
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BE522048A
(enrdf_load_stackoverflow)
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BE449804A
(fr)
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Système de télécommunication pour l'etablissement de connescions
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Frost et al.
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A throwdown machine for telephone traffic studies |
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US3014986A
(en)
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Prepay postpay paystation
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US1830873A
(en)
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Telephone system
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US2860184A
(en)
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Telephone system serving both regular and paystation telephones
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US4169221A
(en)
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Method and apparatus for testing a subscriber line group marker of a telephone central office cross bar switching device
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BE491463A
(enrdf_load_stackoverflow)
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BE535414A
(enrdf_load_stackoverflow)
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BE420417A
(enrdf_load_stackoverflow)
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BE416389A
(enrdf_load_stackoverflow)
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BE428086A
(enrdf_load_stackoverflow)
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BE475418A
(enrdf_load_stackoverflow)
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BE465122A
(enrdf_load_stackoverflow)
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BE548588A
(enrdf_load_stackoverflow)
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BE366415A
(enrdf_load_stackoverflow)
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BE482060A
(enrdf_load_stackoverflow)
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BE464914A
(enrdf_load_stackoverflow)
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Smith
|
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Applicability of automatic switching to all classes of telephone service |
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CH120113A
(fr)
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Installation téléphonique.
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BE436776A
(enrdf_load_stackoverflow)
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BE351277A
(enrdf_load_stackoverflow)
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BE384791A
(enrdf_load_stackoverflow)
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BE414551A
(enrdf_load_stackoverflow)
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