|
US1978191A
|
|
Regenerative furnace
|
|
US2053902A
|
|
Method of and apparatus for melting glass
|
|
US1944074A
|
|
Method and apparatus for operating furnaces
|
|
US1824474A
|
|
Making sheet glass
|
|
GB225789A
|
|
Improvements in or relating to plate glass annealing lehrs
|
|
US1489490A
|
|
Reversing valve
|
|
GB212667A
|
|
Improvements in or relating to lehr conveyors
|
|
GB212997A
|
|
Improvements in or relating to lehrs
|
|
GB211293A
|
|
Improvements in or relating to lehr conveyors
|
|
GB208014A
|
|
Improvements in or relating to plate glass annealing lehrs
|
|
GB212998A
|
|
Improvements in or relating to electrically heated furnaces or lehrs
|
|
US1515511A
|
|
Electrically-heated furnace or leer
|
|
US1476534A
|
|
Valve
|
|
US1426310A
|
|
Plate-glass annealing leer
|
|
US1426309A
|
|
Muffle-flattening oven and leer
|
|
US1530190A
|
|
Plate-glass-annealing leer
|
|
US1529177A
|
|
Leer
|
|
US1502692A
|
|
Leer conveyer
|
|
US1500609A
|
|
Annealing leer
|
|
US1484521A
|
|
Charging door for leers
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