| LC control no. | sh 85067667 |
|---|---|
| LC classification | T15 T35 History T201 T339 Patents |
| Topical heading | Inventions |
| See also | Creative ability in technology Prior art (Patent law) Research, Industrial |
| Scope 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. |
| Subject example tracing | Note under Technological innovations |
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