http://dewey.info/scheme/edition/e23/ en
346.04 Property
346.048 Intangible property
346.0482 Copyright 346.0484 Design protection 346.0486 Patents 346.0488 Trademarks
Dewey Decimal Classification
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License by OCLC Online Computer Library Center, Inc. Permissions beyond the scope of this license may be available at here. All copyright rights in the Dewey Decimal Classification system are owned by OCLC. Dewey, Dewey Decimal Classification, DDC, OCLC and WebDewey are registered trademarks of OCLC.