Industry: 3671—Electron Tubes
Establishments primarily engaged in manufacturing electron tubes and tube parts. Establishments primarily engaged in manufacturing X-ray tubes and parts are classified in Industry 3844.
| Cathode ray tubes | Photomultiplier tubes |
| Electron beam (beta ray) generator tubes | Picture tube reprocessing |
| Electron tube parts, except glass blanks: bases, getters, and guns | Planar triode tubes |
| Electron tubes | Receiving type electron tubes |
| Gas and vapor tubes | Television tubes |
| Geiger Mueller tubes | Transmitting electron tubes |
| Klystron tubes | Traveling wave tubes |
| Light sensing and emitting tubes | Tubes for operating above the X-ray spectrum (with shorter |
| Magnetron tubes | Vacuum tubes |
| Codes |
Titles | Total Marketable US Businesses |
| 36710000 | Electron tubes | 56 |
| 36710100 | Cathode ray tubes, including rebuilt | 17 |
| 36710101 | Picture tube reprocessing | 3 |
| 36710102 | Television tubes | 2 |
| 36710200 | Transmittal, industrial and special purpose electron tubes | 3 |
| 36710201 | Electron beam (beta ray) generator tubes | 6 |
| 36710202 | Electron tubes, industrial | 2 |
| 36710203 | Electron tubes, nsk | 2 |
| 36710204 | Electron tubes, receiving type | 0 |
| 36710205 | Electron tubes, special purpose | 1 |
| 36710206 | Electron tubes, transmitting | 1 |
| 36710207 | Electronic tube parts, except glass blanks | 11 |
| 36710208 | Gas or vapor tubes | 4 |
| 36710211 | Light sensing and emitting tubes | 3 |
| 36710212 | Magnetron tubes | 1 |
| 36710213 | Photomultiplier tubes | 2 |
| 36710214 | Planar triode tubes | 0 |
| 36710215 | Traveling wave tubes | 2 |
| 36710216 | Tubes for operating above the X-ray spectrum | 1 |
| 36710217 | Vacuum tubes | 16 |
