0001237899-04-000029 4 1 20040505 20040506 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 GULER HANS PETER 0001226437 4 34 000-19034 04784206 REGENERON PHARMACEUTICALS INC 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591 9143457491 4 1 edgardoc.xml PRIMARY DOCUMENT