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US2222762A
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Hollow metal bodies and means for producing same
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US2169228A
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Apparatus for making pressure vessels
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US2171972A
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Pressure vessel and method of making same
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US2171973A
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Safety device for pressure vessels
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US2148234A
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Pressure container and process of making same
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US2106496A
|
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Method of making containers
|
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US2106495A
|
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Method of making pressure vessels
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CA442747A
|
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Method of dispensing and measuring the quantity of liquified gases
|
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CA374997A
|
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Tube deposit removing method
|
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CA465683A
|
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Thermal shaping of corundum and spinel crystals
|
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CA244592A
|
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Process of attacking compact mineral materials non-combustible in oxygen
|
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CA415179A
|
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Cutting tool treating method
|
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CA245594A
|
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Welding rod
|
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CA276458A
|
|
Torch tip
|
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CA261135A
|
|
Welded structure
|
|
CA403210A
|
|
Small hole cutting machine
|
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CA443841A
|
|
Electric welding
|
|
CA465988A
|
|
Rotary pump for liquefied gases
|
|
CA442448A
|
|
Skelp edge welding
|
|
CA246912A
|
|
Welding rod
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