Preferred term

T201-T339 Inventions

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

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

Created 11/02/1986, 00:00, last modified 30/06/1993, 09:37