|
CY97A
|
|
Improvements in reinforced brick beams
|
|
DE871060C
|
|
Ceiling hollow stone and hollow stone beam made from this
|
|
DE892233C
|
|
Ceiling formed by beams made of ceiling stones made of baked clay or similar brick material
|
|
DE915500C
|
|
Steel stone beams
|
|
DE914312C
|
|
Steel stone ceiling with ceiling beams made of hollow stones and ceiling stones arranged between the ceiling beams
|
|
GB663910A
|
|
Improvements in hollow moulded blocks for constructional purposes
|
|
GB663843A
|
|
Improvements in the construction of reinforced concrete floors
|
|
GB647975A
|
|
Improvements in the construction of floors by means of terra cotta or like blocks
|
