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
S& S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SKA SKB SKC SKD SKE SKF SKG SKH SKI SKJ SKK SKL SKM SKN SKO SKP SKQ SKR SKS SKT SKU SKV SKW SKX SKY SKZ
SKCB SKCC SKCE SKCF SKCG SKCI SKCJ SKCO SKCQ SKCR SKCU SKCW SKCX SKCY
1 SKCX Spartan Co-operative Creamery Co. (North Western Refrigerator Line Co.) 7/1935   NAKINA
2 SKCX Sinclair-Koppers Co. added 1/1968; 4/1970; eliminated 1/1974   NAKINA
3 SKCX Arco Polymers, Inc. added 1/1974; eliminated 10/1974   NAKINA
4 SKCX ARCO/Polymers, Inc. added 10/1974; 1/1975; eliminated 10/1979   NAKINA
5 SKCX ARCO Polymers, Inc. added 10/1979; 1/1980; eliminated 10/1982   NAKINA
6 SKCX ARCO Chemical Co. added 10/1982; eliminated 1/1984; 1/1994-7/2005 (not listed)   NAKINA
7 SKCX Sinclair-Koppers Co. added 1/68; 4/70   NRHS
8 SKCX ARCO Polymers, Inc. 1/75-1/80; eliminated 10/82   NRHS
9 SKCX ARCO Chemical Co. added 10/82; 1/94-7/2000   NRHS
10 SKCX ARCO CHEMICAL CO. [SINCLAIR-KOPPERS CO.]     PWRC
11 SKCX ARCO Chemical     RSRV