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GB795136A
|
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Improvements in or relating to under-water breathing apparatus
|
|
GB751033A
|
|
Improvements in or relating to self-contained breathing apparatus
|
|
GB746794A
|
|
Improvements in or relating to submarine escape apparatus
|
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GB760230A
|
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Improvements relating to working models for charity appeal, show, advertisement, exhibition and like purposes
|
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GB678683A
|
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Improvements relating to low-resistance non-return valves as used for example in respirators
|
|
GB691698A
|
|
Improvements relating to gas (e.g., air) non-return valves used in breathing apparatus
|
|
GB635242A
|
|
Improvements in or relating to reducing valves
|
|
GB604558A
|
|
Improvements in apparatus for producing analgesia
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|
GB586541A
|
|
Improvements relating to eye protectors
|
|
GB574754A
|
|
Improvements relating to pressure reducing valves and breathing apparatuses incorporating the same
|
|
GB566074A
|
|
Improvements relating to life saving suits to be worn by airmen, shipwrecked personsand the like
|
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GB550243A
|
|
Improvements relating to means for affording protection to the person against exposure to water, wind and like elements
|
|
GB547223A
|
|
Improvements in or relating to devices for protecting the human body and other objects from heat and flame
|
|
GB537230A
|
|
Improvements relating to heaters for heating the atmosphere of an open space
|
|
GB536071A
|
|
Improvements relating to air filters
|
|
GB533386A
|
|
Improvements in or relating to respiratory appliances
|
|
GB533297A
|
|
Improvements relating to apparatus for use in artificial respiration
|
|
GB499038A
|
|
Improvements in or relating to respirators for use in atmospheres containing carbon monoxide
|
|
GB497710A
|
|
Improvements in or relating to gas protective clothing
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GB458538A
|
|
Improvements in or relating to breathing apparatus
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