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Preferred term

T201-T339Inventions  

Note

  • Here are entered works on original devices or processes. Works on fundamental technological improvements or changes in materials, production methods, processes, organization, or management which increase efficiency and production are entered under [Technological innovations.]

Example

  • Note under [Technological innovations]

Notation

  • T15-T35
  • T201-T339

URI

http://www.yso.fi/onto/lcsh/sh85067667

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