| 1 | LPGX | Lancaster Petroleum Gas, Inc. | 7/2005 (not listed) | | NAKINA |
| 2 | LPGX | Universal LPGX Co. | added 10/1977; 1/1980; eliminated 7/1984 | | NAKINA |
| 3 | LPGX | Universal Butane Co. | added 7/1962; 7/1965-1/1975; eliminated 10/1977 | | NAKINA |
| 4 | LPGX | Liquified Petroleum Gas Co. | 8/1920-7/1923 | | NAKINA |
| 5 | LPGX | Universal Butane Co. | 7/65-1/75 | | NRHS |
| 6 | LPGX | Universal LPGX Co. | 1/80; eliminated 7/84 | | NRHS |
| 7 | LPGX | *LIQUIFIED PETROLEUM GAS CO. | | | PWRC |
| 8 | LPGX | *UNIVERSAL LPGX COMPANY [UNIVERSAL BUTANE CO.] | | | PWRC |
| 9 | LPGX | *LANCASTER PETROLEUM GAS, INC. | | | PWRC |
| 10 | LPGX | Universal LPGX | | | RSRV |
