BR7701907A - Aperfeicoamentos em perfuratrizes da crosta terrestre
- Google Patents
Aperfeicoamentos em perfuratrizes da crosta terrestre
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Publication number
BR7701907A
BR7701907ABR7701907ABR7701907ABR7701907ABR 7701907 ABR7701907 ABR 7701907ABR 7701907 ABR7701907 ABR 7701907ABR 7701907 ABR7701907 ABR 7701907ABR 7701907 ABR7701907 ABR 7701907A
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Priority to BR7701907ApriorityCriticalpatent/BR7701907A/pt
Publication of BR7701907ApublicationCriticalpatent/BR7701907A/pt