FR577540A - Improvements to shearers - Google Patents

Improvements to shearers

Info

Publication number
FR577540A
FR577540A FR577540DA FR577540A FR 577540 A FR577540 A FR 577540A FR 577540D A FR577540D A FR 577540DA FR 577540 A FR577540 A FR 577540A
Authority
FR
France
Prior art keywords
shearers
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.)
Sullivan Machinery Co
Original Assignee
Sullivan Machinery Co
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 Sullivan Machinery Co filed Critical Sullivan Machinery Co
Application granted granted Critical
Publication of FR577540A publication Critical patent/FR577540A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in 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)
FR577540D 1923-02-19 1924-02-18 Improvements to shearers Expired FR577540A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US577540XA 1923-02-19 1923-02-19

Publications (1)

Publication Number Publication Date
FR577540A true FR577540A (en) 1924-09-06

Family

ID=22012553

Family Applications (1)

Application Number Title Priority Date Filing Date
FR577540D Expired FR577540A (en) 1923-02-19 1924-02-18 Improvements to shearers

Country Status (2)

Country Link
BE (1) BE577540A (en)
FR (1) FR577540A (en)

Also Published As

Publication number Publication date
BE577540A (en) 1959-07-31

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