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1998-01-21
Improved water proof structure of aluminum window
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1997-06-11
Waterproof structure of aluminum window
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1997-04-21
Improved structure of aluminum window
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1997-10-13
Insulation structure of aluminum window frame
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1997-04-11
Structural improvement of aluminum window
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2000-06-01
Structure of life-saving window
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1997-11-11
Modified structure of aluminum door/window
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1997-01-11
Waterproof structure of jointing aluminum for aluminum window/door
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1998-04-01
Improved structure of water proof door leaf
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1999-05-01
Improvement of hermetic aluminum window structure
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1999-07-21
Improved structure of an aluminum grid window
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1999-05-01
Improvement of hasp structure for aluminum window
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1997-05-01
Improved buckling structure of aluminum door/window
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1999-03-11
Improvemetn of aluminum window frame construction
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1998-06-11
Improved deafening structure of an aluminum window
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2001-06-23
Improved structure of wind-shade block of aluminum window
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1998-01-21
Structure of water proof shoe
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1999-04-01
Improved structure for guiding-block of aluminum window frame
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1998-01-21
Structure of isolated window
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1997-12-01
Modified structure of bottom transverse member of aluminum window
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1998-01-01
Improved structure of an anti-theft window
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2001-01-11
Structure of draining gasket of aluminum window
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1999-01-11
Improvement of aluminum window frame
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1997-07-21
Improved structure of fixing window
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1997-07-21
Improved structure of fixing window