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GB611153A
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Improvements in or relating to sound absorbing building blocks
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GB568696A
|
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Improvements in or relating to sound-absorbing devices
|
|
GB563977A
|
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Improvements in or relating to the sealing of holes under water in the metal platingor timbers of ships or vessels
|
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GB520757A
|
|
Improvements in or relating to sound-absorbing devices
|
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GB505211A
|
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Improvements in or relating to the preparation of grouting materials
|
|
GB493806A
|
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Improvements in or relating to the construction of underground walls in concrete or other similar materials
|
|
GB495755A
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Silencing equipment for air, heating, ventilating, and exhaust ducts, tunnels or the like, and sound treatment for rooms
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GB495699A
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Silencing equipment for air, heating, ventilating, and exhaust ducts, tunnels or the like, and sound treatment for rooms
|
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GB294727A
|
|
Improvements in or relating to pipe joints, couplings or connections
|
|
GB257674A
|
|
Improvements in or relating to the sealing or fixing of casing tubes in bore holes, wells or the like
|
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GB244838A
|
|
Improvements in or relating to the construction of concrete piles or foundation elements
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