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DK474C
(en)
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Sealing the joints between the blocks for underground cable lines.
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FR398488A
(en)
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|
Expansion joint for pipes
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|
FR401302A
(en)
|
|
Seals for pipes
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|
FR414944A
(en)
|
|
Pipe seals
|
|
GB189610085A
(en)
|
|
An Improved Pipe Coupling.
|
|
FR391175A
(en)
|
|
Sleeve for heat insulated pipe flanges
|
|
GB189413804A
(en)
|
|
Improvements in Pipe Joints.
|
|
GB189419795A
(en)
|
|
Improvements in Pipe Joints.
|
|
GB189419944A
(en)
|
|
Improved Pipe Joint.
|
|
FR386149A
(en)
|
|
Seal for machines, ducts, etc.
|
|
DK10750C
(en)
|
|
Sealant for Sewer Pipes.
|
|
GB189510923A
(en)
|
|
Improvements in Joints in Pipes.
|
|
GB189408286A
(en)
|
|
Hose Couplings.
|
|
FR376547A
(en)
|
|
Pipe seal
|
|
FR372620A
(en)
|
|
Sealants for pipe joints
|
|
FR407691A
(en)
|
|
Pipe joint
|
|
GB189407355A
(en)
|
|
A New or Improved Detachable Joint for Water Pipes, Soil Pipes, Sewers, and the like.
|
|
GB189423807A
(en)
|
|
Improvements in Tube Joints or Couplings.
|
|
ES15717A3
(en)
|
|
Channels with stops and grooves for joints, watertight and flexible.
|
|
DK410C
(en)
|
|
Pipe well.
|
|
ES46511A1
(en)
|
|
A procedure for laying underground pipes.
|
|
FR325208A
(en)
|
|
A sealant for watertight fillings, etc.
|
|
CA53625A
(en)
|
|
Pipe joint
|
|
FR351873A
(en)
|
|
Metal seal for boat seals
|
|
CA50683A
(en)
|
|
Pipe joint
|