| 65 / | HD | GLASS MANUFACTURING |
| 17.1 | DF | PROCESSES {32} |
| 24 | DF | .~ Utilizing parting or lubricating layer {2} |
| 25.1 | DF | .~.~ Providing a gaseous layer between glass and apparatus {1} |
| 25.2 | | .~.~.~ Sheet {2} |
| 25.3 | DF | .~.~.~.~> Formed from molten glass |
| 25.4 | DF | .~.~.~.~> Reshaping |