| 65 / | HD | GLASS MANUFACTURING |
| 376 | DF | PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18} |
| 385 | DF | .~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29} |
| 430 | DF | .~.~ With significant coating step {2} |
| 432 | ![]() | .~.~.~ Synthetic or natural resin containing coating |