FR749990A - Fleuret pour perforatrice - Google Patents

Fleuret pour perforatrice

Info

Publication number
FR749990A
FR749990A FR749990DA FR749990A FR 749990 A FR749990 A FR 749990A FR 749990D A FR749990D A FR 749990DA FR 749990 A FR749990 A FR 749990A
Authority
FR
France
Prior art keywords
hole punch
foil
punch foil
hole
punch
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
Charles Erickson
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 filed Critical
Application granted granted Critical
Publication of FR749990A publication Critical patent/FR749990A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR749990D 1932-07-28 1933-02-03 Fleuret pour perforatrice Expired FR749990A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US749990XA 1932-07-28 1932-07-28

Publications (1)

Publication Number Publication Date
FR749990A true FR749990A (fr) 1933-08-02

Family

ID=22122911

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749990D Expired FR749990A (fr) 1932-07-28 1933-02-03 Fleuret pour perforatrice

Country Status (1)

Country Link
FR (1) FR749990A (fr)

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