AIRTIGHT SUCTION DEVICE AND AIR SUPPLY ASSEMBLY THEREOF
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United States of America Patent
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Issued Date -
Nov 28, 2013
app pub date -
May 24, 2012
filing date -
May 24, 2012
priority date (Note) -
Abandoned
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Abstract
An air supply assembly of an airtight suction device includes: a tubular body, an oxygen supply manifold in communication with the tubular body; a scraper fixed in the tubular body; and an air supply unit provided in the tubular body and located between the oxygen supply manifold and the scraper. An airtight suction device can further includes a tubular body, an oxygen supply manifold, a first scraper, a second scraper, and an air supply unit.
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