2019
- Categories:Development history
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- Time of issue:2012-01-01
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(Summary description)As of 2019, the company has obtained 31 technical patents for diamond bits, including five invention patents.
2019
(Summary description)As of 2019, the company has obtained 31 technical patents for diamond bits, including five invention patents.
- Categories:Development history
- Author:
- Origin:
- Time of issue:2012-01-01
- Views:0
Information
As of 2019, the company has obtained 31 technical patents for diamond bits, including five invention patents.
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