Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1976-03-15
1979-11-27
Combs, E. M.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291574, 165177, 165178, 165DIG13, B23P 1526
Patent
active
041753089
ABSTRACT:
In a heat exchanger, ends of adjacent heat-conducting pipes are flattened to form joining faces and these faces are butt-welded together to form a parallel pipe heat exchanger without end plates.
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Combs E. M.
Rising V. K.
Wray James C.
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