FR604475A - Machine à percer les perles fines - Google Patents

Machine à percer les perles fines

Info

Publication number
FR604475A
FR604475A FR604475DA FR604475A FR 604475 A FR604475 A FR 604475A FR 604475D A FR604475D A FR 604475DA FR 604475 A FR604475 A FR 604475A
Authority
FR
France
Prior art keywords
drilling machine
fine pearl
pearl drilling
fine
machine
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
Henri Venot
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 FR604475A publication Critical patent/FR604475A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
    • B28D5/02—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills
    • B28D5/021—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills by drilling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR604475D 1925-10-13 1925-10-13 Machine à percer les perles fines Expired FR604475A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR604475T 1925-10-13

Publications (1)

Publication Number Publication Date
FR604475A true FR604475A (fr) 1926-05-05

Family

ID=8973328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR604475D Expired FR604475A (fr) 1925-10-13 1925-10-13 Machine à percer les perles fines

Country Status (1)

Country Link
FR (1) FR604475A (fr)

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