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2001-10-29
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2004-09-29
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1998-12-16
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Improved intumescent ventilator
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Improved structure for the oil and smoke dispeller of indirectly suction type
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1999-12-11
Improved structure for the oil and smoke dispeller of vertical type
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1999-12-01
Improved structure for the oil and smoke dispeller
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1999-12-01
Improved structure for the oil and smoke dispeller
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1999-11-21
Oil and smoke dispeller of dust suction type
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2000-08-21
Improved oil smoke expeller structure
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1999-10-11
Improved structure for the vertical oil and smoke dispeller
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1999-11-21
Improvement of the washing structure of the oil and smoke dispeller
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1999-11-01
Improved oil inducing dish for the oil and smoke dispeller
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1999-12-01
Improved structure for the fan blade of the oil and smoke dispeller
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1999-10-11
Improved structure for the oil dish of oil and smoke dispeller
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1999-12-01
Improvement on the flow directing structure of the oil and smoke dispeller
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2000-08-01
Improvement of oil priming structure
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1999-11-21
Smoke and oil cleaner for the engine
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1999-08-01
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2001-03-21
Improved structure of ashtray
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2000-07-11
Improved structure for oil smoke ventilator
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1999-06-11
Improved structure for the engine and compressor
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1999-11-21
Improvement of the oil and smoke cleaner by static electricity