|
| 3110 | Transformers, power, manufacturing | |
| 3110 | Transformers, reactor, manufacturing | |
| 3210 | Transistors, manufacturing | |
| 5150 | Transistors, wholesale | |
| 7430 | Transit advertising services | |
| 6021 | Transit system, mixed mode | |
| 6021 | Transit system, operation of | |
| 8531 | Transition homes for women (except short stay) | |
| 2695 | Transit-mixed concrete, manufacturing | |
| 3312 | Transits, surveying, manufacturing | |
| 7499 | Translation services | |
| 3120 | Transmission accessories, electric, manufacturing | |
| 3110 | Transmission and distribution voltage regulators, manufacturing | |
| 3110 | Transmission and generating equipment, electrical, repair | |
| 1912 | Transmission belting, leather, manufacturing | |
| 2519 | Transmission belts, rubber, manufacturing | |
| 3430 | Transmission coolers, manufacturing | |
| 5150 | Transmission equipment, electrical, wholesale | |
| 2320 | Transmission fluids, petroleum, made from refined petroleum | |
| 2429 | Transmission fluids, synthetic, manufacturing | |
| 4520 | Transmission lines, electric power, construction | |
| 4010 | Transmission of electric power | |
| 6030 | Transmission of natural gas | |
| 3430 | Transmission rebuilding on a factory basis | |
| 5020 | Transmission repair and replacement, motor vehicle | |
| 5020 | Transmission repair, automotive | |
| 2811 | Transmission tower sections, prefabricated structural metal, manufacturing | |
| 2811 | Transmission towers and masts, prefabricated, manufacturing | |
| 3430 | Transmissions and parts, automotive, truck and bus, manufacturing | |
| 5020 | Transmissions, automotive, installation, repair, or sale and installation | |
| 3313 | Transmitters, industrial process control type, manufacturing | |
| 5150 | Transmitters, wholesale | |
| 2921 | Transplanters, farm type, manufacturing | |
| 6309 | Transport clearinghouse | |
| 7513 | Transportation and communication research, federal | |
| 7513 | Transportation and communications standards | |
| 7513 | Transportation and communications, provincial government | |
| 6309 | Transportation brokerage (multi modal) | |
| 6309 | Transportation brokers | |
| 6220 | Transportation by space vehicle | |
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