DNA cloning vectors with in vivo excisable plasmids Grant US-5128256-A United States of America 07 Jul 1992
DNA CLONING VECTOR WITH IN VIVO EXCISABLE PLASMIDS Application EP-0286200-A3 European Patent Office 21 Mar 1990
DNA cloning vector with in vivo excisable plasmids Application EP-0286200-A2 European Patent Office 12 Oct 1988
DNA CLONING VECTORS WITH IN VIVO EXCISABLE PLASMIDS Application WO-1988005085-A1 World Intellectual Property Organisation (WIPO) 14 Jul 1988