FR1435778A - Havers - Google Patents

Havers

Info

Publication number
FR1435778A
FR1435778A FR978152A FR978152A FR1435778A FR 1435778 A FR1435778 A FR 1435778A FR 978152 A FR978152 A FR 978152A FR 978152 A FR978152 A FR 978152A FR 1435778 A FR1435778 A FR 1435778A
Authority
FR
France
Prior art keywords
havers
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR978152A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to FR978152A priority Critical patent/FR1435778A/en
Application granted granted Critical
Publication of FR1435778A publication Critical patent/FR1435778A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
FR978152A 1964-06-12 1964-06-12 Havers Expired FR1435778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR978152A FR1435778A (en) 1964-06-12 1964-06-12 Havers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR978152A FR1435778A (en) 1964-06-12 1964-06-12 Havers

Publications (1)

Publication Number Publication Date
FR1435778A true FR1435778A (en) 1966-04-22

Family

ID=8832291

Family Applications (1)

Application Number Title Priority Date Filing Date
FR978152A Expired FR1435778A (en) 1964-06-12 1964-06-12 Havers

Country Status (1)

Country Link
FR (1) FR1435778A (en)

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