BE888543A - Procedes et machines pour le traitement de pierres precieuses, - Google Patents

Procedes et machines pour le traitement de pierres precieuses,

Info

Publication number
BE888543A
BE888543A BE0/204590A BE204590A BE888543A BE 888543 A BE888543 A BE 888543A BE 0/204590 A BE0/204590 A BE 0/204590A BE 204590 A BE204590 A BE 204590A BE 888543 A BE888543 A BE 888543A
Authority
BE
Belgium
Prior art keywords
machines
treatment
methods
precious stones
precious
Prior art date
Application number
BE0/204590A
Other languages
English (en)
Original Assignee
Gersan Ets
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 Gersan Ets filed Critical Gersan Ets
Publication of BE888543A publication Critical patent/BE888543A/fr

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
BE0/204590A 1980-04-23 1981-04-23 Procedes et machines pour le traitement de pierres precieuses, BE888543A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8013407A GB2074480B (en) 1980-04-23 1980-04-23 Working gemstones

Publications (1)

Publication Number Publication Date
BE888543A true BE888543A (fr) 1981-08-17

Family

ID=10512970

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/204590A BE888543A (fr) 1980-04-23 1981-04-23 Procedes et machines pour le traitement de pierres precieuses,

Country Status (5)

Country Link
BE (1) BE888543A (fr)
GB (1) GB2074480B (fr)
IL (1) IL62692A (fr)
NL (1) NL8101965A (fr)
ZA (1) ZA812625B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759130A (en) * 1985-11-12 1988-07-26 U.S. Philips Corporation Goniometer head arrangement
IL86762A (en) * 1988-06-16 1991-04-15 Hargem Ltd Centering apparatus for a gemstone
GB9109496D0 (en) * 1990-05-04 1991-06-26 Brilcut Patent Working gemstones
CN1063378C (zh) * 1996-02-14 2001-03-21 浙江大学 一步法加工硅111晶锭参考面的方法及设备

Also Published As

Publication number Publication date
GB2074480B (en) 1983-04-07
IL62692A (en) 1982-12-31
NL8101965A (nl) 1981-11-16
IL62692A0 (en) 1981-06-29
GB2074480A (en) 1981-11-04
ZA812625B (en) 1982-05-26

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: GERSAN ESTABLISHMENT

Effective date: 19960430