FR329105A - Warning system for extraction wells - Google Patents

Warning system for extraction wells

Info

Publication number
FR329105A
FR329105A FR329105DA FR329105A FR 329105 A FR329105 A FR 329105A FR 329105D A FR329105D A FR 329105DA FR 329105 A FR329105 A FR 329105A
Authority
FR
France
Prior art keywords
warning system
extraction wells
wells
extraction
warning
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
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
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 Siemens and Halske AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR329105A publication Critical patent/FR329105A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • B66B19/06—Applications of signalling devices
FR329105D 1903-02-05 1903-02-05 Warning system for extraction wells Expired FR329105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR329105T 1903-02-05

Publications (1)

Publication Number Publication Date
FR329105A true FR329105A (en) 1903-07-25

Family

ID=1378967

Family Applications (1)

Application Number Title Priority Date Filing Date
FR329105D Expired FR329105A (en) 1903-02-05 1903-02-05 Warning system for extraction wells

Country Status (1)

Country Link
FR (1) FR329105A (en)

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