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1998-03-02
New polymorphe modification of doxazosin-mesylate
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1998-03-02
New polymorphe modification of doxazosin-mesylate
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Improved structure of slope protection block
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Improved structure of pushbutton
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Additional improved structure of coat-stand
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Improved structure of groyne
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1997-06-21
Slope protection block
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Improved structure of rocket-launching device
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Structure of assembled slope protecting brick
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Improved structure of mousetraps
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1997-08-01
Improved structure of earmask
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1999-07-11
Improvement on structure of protection mouth-muffle
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1997-05-01
Improved structure of tire-fixing nail
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1997-04-11
Structure of slope protection planting
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1999-05-11
Improvement of inter-com
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1997-03-21
Improved structure of plug
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1997-05-11
Structural improvement of slope protection block having wave eliminating function
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1997-01-11
Improved structure of insulator
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1997-06-11
Fish-shaped slope protection block
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1997-02-11
Structure of padlock
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1997-04-01
Improved structure of skateboard
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1997-10-21
Improved structure of circle-drawing device