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BR8705306A - IMPROVEMENTS IN MINING PROCESS AND EQUIPMENT - Google Patents

IMPROVEMENTS IN MINING PROCESS AND EQUIPMENT

Info

Publication number
BR8705306A
BR8705306A BR8705306A BR8705306A BR8705306A BR 8705306 A BR8705306 A BR 8705306A BR 8705306 A BR8705306 A BR 8705306A BR 8705306 A BR8705306 A BR 8705306A BR 8705306 A BR8705306 A BR 8705306A
Authority
BR
Brazil
Prior art keywords
equipment
mining process
mining
Prior art date
Application number
BR8705306A
Other languages
Portuguese (pt)
Inventor
Joao Acacio Gomes De Oliv Neto
Original Assignee
Joao Acacio Gomes De Oliveira
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Joao Acacio Gomes De Oliveira filed Critical Joao Acacio Gomes De Oliveira
Priority to BR8705306A priority Critical patent/BR8705306A/en
Publication of BR8705306A publication Critical patent/BR8705306A/en

Links

BR8705306A 1987-09-30 1987-09-30 IMPROVEMENTS IN MINING PROCESS AND EQUIPMENT BR8705306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR8705306A BR8705306A (en) 1987-09-30 1987-09-30 IMPROVEMENTS IN MINING PROCESS AND EQUIPMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR8705306A BR8705306A (en) 1987-09-30 1987-09-30 IMPROVEMENTS IN MINING PROCESS AND EQUIPMENT

Publications (1)

Publication Number Publication Date
BR8705306A true BR8705306A (en) 1988-02-23

Family

ID=4043274

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8705306A BR8705306A (en) 1987-09-30 1987-09-30 IMPROVEMENTS IN MINING PROCESS AND EQUIPMENT

Country Status (1)

Country Link
BR (1) BR8705306A (en)

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Legal Events

Date Code Title Description
B21A Extinguishment of a patent or of a certificate of addition of invention: extinguishment - article 78, item i of industrial property law

Free format text: PATENTE EXTINTA EM 30/09/2002

B15K Others concerning applications: alteration of classification

Ipc: B04B 1/04 (2010.01), E21C 41/00 (2010.01)