| http://www.w3.org/ns/prov#value | - Patent US5369687 - Apparatus for electrically isolating a telephone line from a data device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA data access arrangement circuit (60) for supplying electrical isolation between a telephone line (11) and a data device, such as a data terminal or a computer, connected to a modem (10).
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