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GB764333A
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Improvements in and relating to diascopic optical projection and apparatus therefor
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GB741127A
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Improvements in and relating to optical light-projecting systems particularly for diascopic projection
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US2670424A
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Method of electric arc welding of metal or alloy studs and the like to metal or alloy plates and the like
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GB649951A
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Improved methods and apparatus for the electric arc welding of metal or alloy studs,tubes and the like to metal or alloy plates, bodies and the like
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GB636343A
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Improvements in and relating to the welding of metal studs and the like to metal plates and the like
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GB635625A
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Improvements in and relating to stud welding
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US2462882A
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Method of electric welding metal stud-like articles to metal platelike bodies
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GB565219A
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Improvements in or relating to electric arc welding
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GB580757A
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Improvements in and relating to the welding of metal studs and the like to metal plates and the like
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GB580732A
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Improvements in and relating to the welding of metal studs and the like to metal plates and the like
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GB550727A
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Improvements in or relating to electric arc welding
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GB534455A
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Improvements in and relating to apparatus for the projection of light
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GB510593A
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Improvements in and relating to the projection of light, more particularly by the use of alternating current arcs
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GB441195A
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Improvements in and relating to the projection of light
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GB319570A
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Improvements in or relating to apparatus for electrically measuring fluid flow
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GB306014A
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Improvements in or relating to apparatus for electrically measuring fluid flow
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GB299339A
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Improvements in or relating to manometers
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US1622794A
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Fluid-pressure-operated means for indicating the quantity and specific gravity of the liquid contents of tanks
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GB260323A
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Improvements in or relating to manometers
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GB266403A
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An improved method of ensuring electrical contact between electrical conductors
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