|
| 3111 | Rabbit canning | |
| 1120 | Rabbit destroying, farm service | |
| 3111 | Rabbit killing, dressing and packing | |
| 1110 | Rabbit raising | |
| 9490 | Race course betting | |
| 9490 | Race course operation | |
| 9350 | Race course owners' association | |
| 9490 | Race horse trainer | |
| 9490 | Race track operation | |
| 9490 | Racing tipster | |
| 3320 | Rack, display, manufacturing | |
| 3559 | Rack, hard rubber, manufacturing | |
| 3832 | Radar equipment manufacturing | |
| 7132 | Radar station operation | |
| 3851 | Radiation detecting or measuring apparatus manufacturing | |
| 3843 | Radiator cap and shell, motor vehicle, manufacturing | |
| 3819 | Radiator enclosure, metal, manufacturing | |
| 9513 | Radiator motor vehicle, repairing | |
| 3819 | Radiator shield, sheet metal, manufacturing | |
| 3819 | Radiator, except motor vehicle, manufacturing | |
| 3843 | Radiator, motor vehicle, manufacturing | |
| 7132 | Radio beacon operation | |
| 3832 | Radio beacon, flashing, electrical | |
| 9413 | Radio broadcasting station | |
| 3560 | Radio cabinet, plastic, manufacturing | |
| 3320 | Radio cabinet, wooden, manufacturing | |
| 7200 | Radio communication service | |
| 9414 | Radio employment agency, performer | |
| 3832 | Radio manufacturing | |
| 7200 | Radio message transmitting service | |
| 3832 | Radio part manufacturing | |
| 3832 | Radio phonograph combination manufacturing | |
| 3832 | Radio receiving set manufacturing | |
| 9512 | Radio repairing | |
| 9413 | Radio station | |
| 5000 | Radio station construction | |
| 7200 | Radio telegraph service | |
| 7200 | Radio telephone service | |
| 5000 | Radio tower construction | |
| 3832 | Radio transmitting apparatus manufacturing | |
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