4 – 1 9 9 9 ) ▁ ▁Other ▁business ▁ ▁Bell ▁A ircraft , ▁an ▁aircraft ▁manufact urer ▁of ▁the ▁United ▁States ▁ ▁Bell ▁Hel ic opter , ▁an ▁American ▁rot or craft ▁manufact urer ▁ ▁Bell ▁ID , ▁a ▁software ▁company ▁based ▁in ▁The ▁Netherlands ▁ ▁Bell ▁Records , ▁a ▁record ▁label ▁ ▁Bell ▁Sports ▁Inc ., ▁a ▁hel met ▁manufact urer ▁ ▁Bell ' s ▁Bre wer y , ▁based ▁in ▁Michigan ▁ ▁Mathemat ics , ▁science ▁and ▁technology ▁ ▁Bell , ▁the ▁body ▁of ▁a ▁jel ly fish ▁ ▁Bell ▁character , ▁in ▁computing , ▁a ▁device ▁control ▁code ▁ ▁Bell ▁number , ▁in ▁mathematics ▁ ▁Bell ▁polynomials , ▁in ▁mathematics ▁ ▁Bell ▁state , ▁in ▁quantum ▁information ▁science ▁ ▁D iving ▁bell , ▁a ▁cable - s us p ended ▁under water ▁a irt ight ▁chamber ▁ ▁Transport ation ▁ ▁Rail ▁ ▁Bell ▁( ME T ROR ail ▁station ), ▁Houston , ▁Texas , ▁United ▁States ▁ ▁Bell ▁railway ▁station , ▁Melbourne , ▁Australia ▁ ▁Bell ▁railway ▁station , ▁New ▁South ▁Wales , ▁Australia ▁ ▁Sea ▁ ▁SS ▁Empire ▁Bell , ▁a ▁Swedish ▁col lier ▁( bul k ▁cargo ▁ship ) ▁launched ▁in ▁ 1 9 3 0 ▁ ▁USS ▁Bell , ▁either ▁of ▁two ▁U . S . ▁Navy ▁ships ▁ ▁Other ▁forms ▁of ▁transport ation ▁ ▁Bell ▁( cycle car ), ▁a ▁British ▁three - w he e led ▁cycle car ▁made ▁in ▁ 1 9 2 0 ▁by ▁W . G . ▁Bell ▁of ▁Ro