一、基本案情原告陆某系某外卫废弃物处置管理处的工程师。他于1987年9月12日向中国专利局申请了实用新型”熟化垃圾组合筛碎机”专利，1989年3月28日取得专利权。被告某环境卫生工程实验厂（简称环卫厂）接受国家城乡建设环境保护部下达的全国城乡建设科学技术发展计划，负责 First, the basic case The plaintiff Lu Mou Department of an external waste disposal and disposal of engineers. He applied to the Chinese Patent Office on September 12, 1987 for the utility model patent of “maturing garbage combination screen grinder” and obtained the patent right on March 28, 1989. The defendant, an environmental health experimental plant (referred to as sanitation plant) to accept the national urban and rural construction and environmental protection department issued by the national urban and rural construction science and technology development plan is responsible for