GB173671A
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Improvements in or connected with galvanic batteries
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GB176845A
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Improvements in or relating to the distribution of stone or other incombustible dust in coal mines and the like
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GB174480A
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Improvements in or connected with electric switches
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GB171878A
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Improvements in or connected with electric switches
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GB174156A
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Improvements in or connected with magnetic locks
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GB169082A
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Improvements in or connected with gas exits for galvanic batteries
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GB164496A
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Improvements in or connected with miners' safety and other electric hand lamps
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GB155071A
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Improvements in or connected with galvanic batteries
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GB154737A
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Improvements in or connected with galvanic batteries
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GB154016A
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Improvements in or connected with apparatus for charging galvanic batteries
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