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Expired
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GB3696/31A
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Individual
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Individual
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Publication of GB365347ApublicationCriticalpatent/GB365347A/en
A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
A62B18/02—Masks
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Health & Medical Sciences
(AREA)
Life Sciences & Earth Sciences
(AREA)
Zoology
(AREA)
Pulmonology
(AREA)
General Health & Medical Sciences
(AREA)
Business, Economics & Management
(AREA)
Emergency Management
(AREA)
Respiratory Apparatuses And Protective Means
(AREA)
Abstract
Respiratory masks are made by placing superposed alternate layers of fabric, for example linen or stockinette, and impermeabilizing material, for example unvulcanized sheet rubber, in a mould and combining them after moulding, as by heating, in the mould to soften and vulcanize the rubber.ALSO:Respiratory masks are made by placing superposed alternate layers of fabric, for example linen or stockinette, and impermeabilizing material, for example unvulcanized sheet rubber, in a mould and combining them after moulding, as by heating in the mould to soften and vulcanize the rubber.
GB3696/31A1930-03-051931-02-05Process for the manufacture of respiratory masks
ExpiredGB365347A
(en)
Improvements in or relating to goods of india-rubber or the like or in which india-rubber or the like is a constituent material, such goods, for example, being hot water bottles, and the manufacture thereof
Process and apparatus for the production of semi-finished products and finished articles of fabric, which are trimmed (provided) with rubber sheets shaped in any desired manner