[1]CurrentPatentAssignee:PPGINDUSTRIESINC-US2379250,1941,A
[1]Diels;Wulff[JustusLiebigsAnnalenderChemie,1924,vol.437,p.317]
[1]Diels;Wulff[JustusLiebigsAnnalenderChemie,1924,vol.437,p.317]
[1]CurrentPatentAssignee:PPGINDUSTRIESINC-US2370549,1944,A
[2]CurrentPatentAssignee:PPGINDUSTRIESINC-US2370549,1944,A
[1]Diels;Wulff[JustusLiebigsAnnalenderChemie,1924,vol.437,p.317]