Isbn: 9787562960607 - 滤棒行业专利布局与保护机制研究 (1 risultati)

paperback. Condizione: New. Paperback.Pub Date:2021-08-01 Pages:229 Language:Chinese Publisher:Wuhan University of Technology Press Based on the strategic needs of industry development. this book firstly investigates the filter rod technology of well-known cigarette brands at home and abroad. and understands the filter rod technology Development situation. formulate a search strategy for domestic and foreign filter rod patents. and then analyze the development of domestic and foreign filter rod patent technologies throu.…