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US1764460A
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Tunnel kiln
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US1703630A
|
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Sheet-steel annealing
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US1693152A
|
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Furnace-truck seal
|
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US1642938A
|
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Kiln car
|
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US1738597A
|
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Continuous-tunnel kiln
|
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US1646208A
|
|
Tunnel kiln
|
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US1741147A
|
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Combustion-chamber construction
|
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US1615217A
|
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Tunnel-kiln-heating means
|
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US1641186A
|
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Kiln car
|
|
US1638988A
|
|
Reciprocating car kiln
|
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US1539264A
|
|
Car-wheel mounting
|
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US1543830A
|
|
Continuous kiln and method of operating same
|
|
US1651380A
|
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Open-fire kiln
|
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US1596502A
|
|
Open fire kiln
|
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US1744453A
|
|
Kiln-heating means
|
|
US1556294A
|
|
Tunnel-kiln-car construction
|
|
US1556209A
|
|
Method of and means for handling material in annealing
|
|
US1505768A
|
|
Tunnel kiln and method of operating same
|
|
US1601748A
|
|
Tunnel kiln
|
|
US1499354A
|
|
Twin-tunnel kiln and method of operating the same
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