GENERAL BALLAST
This invention includes three types. Every enterprise can reform its products according to this invention.
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
17.09.1986
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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Summary: | This invention includes three types. Every enterprise can reform its products according to this invention. |
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Bibliography: | Application Number: CN1985102180 |