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Worischek, Arthur, Searching Foreign Patents, introduction to Severance s Manual of Foreign Patents, Patent Office Society, Washington, D. C., 1935. [Pg.219]

See also in sourсe #XX -- [ Pg.208 , Pg.217 , Pg.219 ]

See also in sourсe #XX -- [ Pg.81 , Pg.85 , Pg.87 , Pg.89 ]