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
SWA SWB SWC SWD SWE SWF SWG SWH SWI SWJ SWK SWL SWM SWN SWO SWP SWQ SWR SWS SWT SWU SWV SWW SWX SWY SWZ
SWPA SWPD SWPE SWPI SWPN SWPO SWPR SWPT SWPU SWPX SWPY
1 SWPX Shawinigan Chemicals Ltd. 7/1930-10/1966; eliminated 10/1969   NAKINA
2 SWPX Gulf Oil Canada Ltd., Shawinigan Chemicals Division added 10/1969; eliminated 1/1970   NAKINA
3 SWPX Gulf Oil Canada, Ltd. added 1/1970; 4/1970; eliminated 4/1972   NAKINA
4 SWPX Southwestern Portland Cement Co. added 10/1991; eliminated 10/1993; 1/1994-7/2005 (not listed)   NAKINA
5 SWPX Shawinigan Chemicals Ltd. 4/38-10/66; eliminated 10/69   NRHS
6 SWPX Gulf Oil Canada Ltd., Shawinigan Chemicals Division added 10/69; eliminated 1/70   NRHS
7 SWPX Gulf Oil Canada, Ltd. added 1/70; 4/70; eliminated 4/72   NRHS
8 SWPX Southwestern Portland Cement Co. added 10/91; eliminated 10/93; 1/94-7/2000   NRHS
9 SWPX *GULF OIL CANADA LTD., SHAWINIGAN CHEMICALS DIV.     PWRC
10 SWPX +SOUTHWESTERN PORTLAND CEMENT COMPANY     PWRC
11 SWPX Southwestern Portland Cement     RSRV