▁the ▁emp ire ▁until ▁the ▁Sever an ▁dynast y ▁( 1 9 3 – 2 3 5 ). ▁There ▁are ▁several ▁Christian ▁ins cri ptions ▁of ▁the ▁late ▁fifth ▁and ▁early ▁sixth ▁centuries ▁in ▁the ▁Arab ic ▁script ▁that ▁bear ▁dates ▁in ▁the ▁Arab ian ▁era . ▁These ▁are ▁found ▁in ▁Sy ria ▁and ▁South ▁Arab ia , ▁far ▁beyond ▁the ▁old ▁provincial ▁boundaries . ▁The ▁use ▁of ▁the ▁provincial ▁era ▁continued ▁well ▁into ▁the ▁Islam ic ▁period , ▁even ▁as ▁late ▁as ▁AD 7 3 5 . ▁In ▁the ▁later ▁period , ▁the ▁calendar ▁era ▁was ▁almost ▁never ▁identified ▁explicitly . ▁ ▁Notes ▁ ▁S ources ▁ ▁Further ▁reading ▁ ▁Category : Calendar ▁er as ▁Category : A rab ia ▁Pet ra ea ▁Category : L ate ▁anti qu ity <0x0A> </s> ▁Digital ▁Ocean , ▁Inc ., ▁was ▁a ▁mak er ▁of ▁wireless ▁products ▁from ▁ 1 9 9 2 ▁to ▁ 1 9 9 8 . ▁ ▁The ▁company ▁was ▁founded ▁in ▁May ▁ 1 9 9 2 ▁by ▁J ef fer y ▁Al holm ▁and ▁head qu arter ed ▁in ▁Len ex a , ▁Kansas . ▁Several ▁contract s ▁with ▁Apple ▁Inc ., ▁ ▁AT & T , ▁Air on et ▁W ire less ▁Communic ations ▁( l ater ▁acquired ▁by ▁C is co ▁as ▁its ▁wireless ▁L AN ▁division ), ▁Harris ▁Sem icon duct or , ▁the ▁United ▁States ▁Department ▁of ▁Def ense , ▁and ▁several ▁others ▁made ▁Digital ▁Ocean ▁the ▁leader ▁in ▁developing ▁and ▁manufact uring ▁state -