Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
B& B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ
BKA BKB BKC BKD BKE BKF BKG BKH BKI BKJ BKK BKL BKM BKN BKO BKP BKQ BKR BKS BKT BKU BKV BKW BKX BKY BKZ
BKCA BKCB BKCC BKCD BKCE BKCF BKCG BKCH BKCI BKCK BKCL BKCM BKCN BKCO BKCP BKCQ BKCR BKCS BKCT BKCV BKCX BKCY
1 BKCX The Berkshire Chemical Co. 7/1935-4/1938   NAKINA
2 BKCX The Berkshire Chemical Co. Apr-38   NRHS
3 BKCX BERKSHIRE CHEMICAL CO.     PWRC