METAL SMOKE RETARDERS FOR POLYVINYL-CHLORIDE)

[81] TOYOSAKI Y, 1974, Patent No. 7349

[82] TSIGDINOS GA, 1956, Patent No. 2736800

[83] WHITE EL, 1976, Patent No. 3945974

[84] WHITE EL, 1976, Patent No. 3996142

[85] WILSON AP, 1976, Patent No. 3935142

[86] YAMASHITA H, 1976, Patent No. 17949

[87] 1978, Patent No. 3043740

[88] 1977, Patent No. 7505250

[89] 1977, Patent No. 4053454

[90] 1977, Patent No. 1490233

[81] TOYOSAKI Y, 1974, Patent No. 7349

[82] TSIGDINOS GA, 1956, Patent No. 2736800

[83] WHITE EL, 1976, Patent No. 3945974

[84] WHITE EL, 1976, Patent No. 3996142

[85] WILSON AP, 1976, Patent No. 3935142

[86] YAMASHITA H, 1976, Patent No. 17949

[87] 1978, Patent No. 3043740

[88] 1977, Patent No. 7505250

[89] 1977, Patent No. 4053454

[90] 1977, Patent No. 1490233