Company Names:
BR-GO (13800000000 B.C.)
RS-Extensive (3600 B.C.-1491 A.D.)
EG-Pioneer (1500-1871)
OS-Ready (1872-n^6+4000000001)
OS-Centurial (n^6+4000000001-n^n-3)
OS-Ready (n^n-2)

OS Names:
ProtowareRS (13800000000 B.C.-500002 B.C.)
PenticRS (500001 B.C.-447 A.D.)
ProwlerRS (450 A.D.-1491 A.D.)
GearsEG (1500-1701)
PoweredEG (1702-1872)
PowerOS (1872)