台灣區發明人未實施專利之成因及其改良之研究
By: Wu Renrong [zhu]
Publisher: Guo li zheng zhi da xue qi ye guan li yan jiu suo
Published: 1978
Place of publication: Taiwan
Language: chi
Number of pages: 156
Subjects: Inventors
Other titles: Taiwan qu fa ming ren wei shi shi zhuang li zhi cheng yin ji qi gai liang zhi yan jiu