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>  In the late 60's inventors Jim Woodberry and Jordan Klein developed a
>  series of "liquid air" breathing systems successfully dived to 200ft.
>  [...]
>  The tanks were "Dewar" bottles -- aka thermos-type bottles -- nesting
>  stainless steel or aluminum alloy tanks with vacuum and open cell
>  insulation between the them.

Indeed, this was one of the greatest partnerships in diving.  
Before Woodberry's contribution of the "Dewar Flask", system 
prototypes utilizing a "Klein Bottle" had terrible problems 
with leaking.

- Todd

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