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
H& H0 H1 H2 H3 H4 H5 H6 H7 H8 H9 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ
HMA HMB HMC HMD HME HMF HMG HMH HMI HMJ HMK HML HMM HMN HMO HMP HMR HMS HMT HMU HMV HMW HMX HMY HMZ
HMPC HMPD HMPF HMPG HMPK HMPL HMPM HMPN HMPO HMPP HMPQ HMPT HMPU HMPX HMPY
1 HMPX Halstead Metal Products, Inc. added 1/1966; 10/1966; eliminated 7/1969   NAKINA
2 HMPX National Car Co. 1/1945-4/1947   NAKINA
3 HMPX Halstead Metal Products, Inc. added 1/66; 10/66; eliminated 7/69   NRHS
4 HMPX *NATIONAL CAR CO.     PWRC
5 HMPX *HALSTEAD METAL PRODUCTS, INC.     PWRC