Forehearth for molten glass
Formation of filaments directly from molten material
Forming "v" bends in glass sheets by press bending
Forming a gob of molten glass into a parison
Forming filaments from centrifuge with perforated support...
Forming level air conditioning system
Forming optical fiber having abrupt index change
Full density silica glass and process and apparatus for...
Funnel arm operating mechanism
Furnace and process for optical fiber drawing
Furnace bottom heating
Furnace for fining molten glass
Furnace for heat treatments of glass sheets
Furnace for heating glass preform for optical fiber and...
Furnace for heating glass preform for optical fiber and...
Furnace for heating glass sheets
Furnace for heating highly pure quartz preform for optical...
Furnace for producing high purity quartz glass preform
Furnace for production of optical fiber preform
Furnace outlet