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US20040226558A1
(en)
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Ventilation system for safety clothing
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GB1392069A
(en)
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Respiratory apparatus
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|
GB1528583A
(en)
|
|
Lung ventilating apparatus
|
|
US4440166A
(en)
|
|
Electrically and mechanically controllable closed cycle respirator
|
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US4630605A
(en)
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Respirator control device
|
|
US3190287A
(en)
|
|
Breathing system
|
|
GB780742A
(en)
|
|
Subaqueuos breathing apparatus
|
|
GB1551226A
(en)
|
|
Valve
|
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US2728340A
(en)
|
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Control device for breathing apparatus
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PL63458B1
(da)
|
|
|
|
US4917081A
(en)
|
|
Portable emergency breathing apparatus
|
|
US667840A
(en)
|
|
Respirator.
|
|
US4794923A
(en)
|
|
Portable emergency breathing apparatus
|
|
US3983869A
(en)
|
|
Humidifier for aqualung equipment
|
|
US3200818A
(en)
|
|
Breathing apparatus
|
|
GB1092818A
(en)
|
|
A respiratory apparatus
|
|
US3073298A
(en)
|
|
Respiratory device
|
|
GB724801A
(en)
|
|
Improvements in or relating to protective oxygen respirators providing circulation of the respiration air
|
|
US3805779A
(en)
|
|
Breathing system protecting apparatus with a closed or semi-open circulation of respiration gas
|
|
US2743722A
(en)
|
|
Free diving apparatus
|
|
GB389358A
(en)
|
|
Improvements in or relating to breathing apparatus
|
|
GB799635A
(en)
|
|
Improvements in closed circuit breathing apparatus
|
|
US2275534A
(en)
|
|
Anesthesia apparatus
|
|
US3456643A
(en)
|
|
Control system for breathing apparatus
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PL325894A1
(en)
|
|
Method of and apparatus for operating a dry powder sprinkler-type fire extinguishing system
|