0000950172-04-003022 8-K 1 20041217 8.01 20041217 20041217 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 8-K 34 000-19034 041211392 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 8-K 1 regen8k.txt FORM 8-K