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LC control 85067667
LC classificationT15 T35 History
T201 T339 Patents
Topical headingInventions
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See alsoCreative ability in technology
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Prior art (Patent law)
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Research, Industrial
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Scope noteHere 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.
Subject example tracingNote under Technological innovations