Improvements in non-return valves particularly applicable as silencers for internal combustion engines, fire arms and the like
GB334162A
Improvements in and relating to blow-pipe cutting apparatus
US1841878A
Blowpipe cutting apparatus
US1802237A
Method for damping vibrations which is chiefly applicable to blowpipe apparatus for the cutting of metals, and apparatus wherein the said method is carried into effect
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Speed-regulating device particularly applicable to blowpipes
