PISTON-CHAMBER COMBINATION
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United States of America Patent
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N/A
Issued Date -
Jun 14, 2012
app pub date -
Dec 30, 2009
filing date -
Dec 30, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A piston chamber combination comprising a container type piston, communicating with an enclosed space, said enclosed space having an at least substantially constant volume.
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