| SIC Code | Business or Product | Registrants |
|---|
|  | | |
| 3826 | Gas analyzers, laboratory type | 126 |
| 3519 | Gas and diesel engine rebuilding, on a factory basis | * |
| 3823 | Gas and liquid analysis instruments, industrial process type | 110 |
| 4932 | Gas and other services combined (gas less than 95 percent of total) | 26 |
| 3671 | Gas and vapor tubes | * |
| 7699 | Gas appliance repair service | * |
| 3822 | Gas burner automatic controls, except valves | 35 |
| 3433 | Gas burners, domestic | 38 |
| 3826 | Gas chromatographic instruments, laboratory type | 126 |
| 1389 | Gas compressing, natural gas at the field on a contract basis | 171 |
| 3823 | Gas flow computers, industrial process type | 110 |
| 3433 | Gas heaters, room | 38 |
| 3443 | Gas holders, metal plate | 35 |
| 3433 | Gas infrared heating units | 38 |
| 1799 | Gas leakage detection-contractors | * |
| 3648 | Gas lighting fixtures | * |
| 5099 | Gas lighting fixtures – wholesale | 42 |
| 1623 | Gas main construction-general contractors | 37 |
| 3842 | Gas masks | 187 |
| 3321 | Gas pipe, cast iron | * |
________
* There are SEC Registrants, but only at the 2- or 3-digit SIC Code levels. |
