| http://www.w3.org/ns/prov#value | - Patent US5191611 - Method and apparatus for protecting material on storage media and for ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA method and apparatus for granting privileges for securely and selectively retrieving material such as data and databases, messages and other textual information, graphics, tables, analogs such as m
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