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 | .~.~ With significant coating step {2} | |
431 | DF | .~.~.~> Free metal or metal alloy containing coating |
432 | DF | .~.~.~> Synthetic or natural resin containing coating |