FR346131A - Perfectionnements aux machines à exploiter la houille, etc. - Google Patents

Perfectionnements aux machines à exploiter la houille, etc.

Info

Publication number
FR346131A
FR346131A FR346131DA FR346131A FR 346131 A FR346131 A FR 346131A FR 346131D A FR346131D A FR 346131DA FR 346131 A FR346131 A FR 346131A
Authority
FR
France
Prior art keywords
coal mining
mining machines
machines
coal
mining
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
English (en)
Inventor
Frank Eckersley
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR346131A publication Critical patent/FR346131A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR346131D 1904-03-03 1904-09-08 Perfectionnements aux machines à exploiter la houille, etc. Expired FR346131A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB346131X 1904-03-03

Publications (1)

Publication Number Publication Date
FR346131A true FR346131A (fr) 1905-01-05

Family

ID=1394871

Family Applications (1)

Application Number Title Priority Date Filing Date
FR346131D Expired FR346131A (fr) 1904-03-03 1904-09-08 Perfectionnements aux machines à exploiter la houille, etc.

Country Status (1)

Country Link
FR (1) FR346131A (fr)

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