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GB366680A
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Improvements relating to domestic hot water supply apparatus or systems
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GB351202A
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Improvements relating to screw bolts
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GB336735A
|
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Improvements in or relating to means for connecting pipes, electric immersion heaters and similar apparatus to cisterns, tanks and the like
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GB303556A
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Improvements relating to wall or like clips for pipes, conduits, cables and the like
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GB283712A
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Improvements relating to pipe and other fittings or connections for sheet metal cylinders or tanks
|
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GB236053A
|
|
Improvements relating to pipe joints or connections for tanks, cylinders and the like
|
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GB238675A
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Improvements in or relating to annular drills or cutters
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GB238052A
|
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Improvements relating to clack valves
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GB182973A
|
|
Improvements in or relating to hot water supply apparatus
|
|
GB163120A
|
|
Improvements in or relating to hot water supply apparatus
|
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GB139002A
|
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Improvements in emptying and cleaning plugs for hot water apparatus, boilers and thelike
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