ZA767290B - Improvements in the cutting of diamonds - Google Patents

Improvements in the cutting of diamonds

Info

Publication number
ZA767290B
ZA767290B ZA767290A ZA767290A ZA767290B ZA 767290 B ZA767290 B ZA 767290B ZA 767290 A ZA767290 A ZA 767290A ZA 767290 A ZA767290 A ZA 767290A ZA 767290 B ZA767290 B ZA 767290B
Authority
ZA
South Africa
Prior art keywords
diamonds
cutting
Prior art date
Application number
ZA767290A
Other languages
English (en)
Inventor
H Van Zwam
Original Assignee
H Van Zwam
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 H Van Zwam filed Critical H Van Zwam
Priority to ZA767290A priority Critical patent/ZA767290B/xx
Priority to IL7753197A priority patent/IL53197A/xx
Publication of ZA767290B publication Critical patent/ZA767290B/xx
Priority to BE183261A priority patent/BE861611A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
ZA767290A 1976-12-07 1976-12-07 Improvements in the cutting of diamonds ZA767290B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ZA767290A ZA767290B (en) 1976-12-07 1976-12-07 Improvements in the cutting of diamonds
IL7753197A IL53197A (en) 1976-12-07 1977-10-23 Method of cutting diamonds
BE183261A BE861611A (fr) 1976-12-07 1977-12-07 Perfectionnements relatifs a la taille de diamants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA767290A ZA767290B (en) 1976-12-07 1976-12-07 Improvements in the cutting of diamonds

Publications (1)

Publication Number Publication Date
ZA767290B true ZA767290B (en) 1977-11-30

Family

ID=25571004

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA767290A ZA767290B (en) 1976-12-07 1976-12-07 Improvements in the cutting of diamonds

Country Status (3)

Country Link
BE (1) BE861611A (fr)
IL (1) IL53197A (fr)
ZA (1) ZA767290B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529305A (en) 1981-08-03 1985-07-16 Welford Walter T Examining a gemstone

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184732A (en) * 1985-12-20 1993-02-09 Gersan Establishment Shape sorting
GB8531396D0 (en) * 1985-12-20 1986-02-05 Gersan Ets Sorting
IL86762A (en) * 1988-06-16 1991-04-15 Hargem Ltd Centering apparatus for a gemstone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529305A (en) 1981-08-03 1985-07-16 Welford Walter T Examining a gemstone

Also Published As

Publication number Publication date
IL53197A (en) 1981-07-31
IL53197A0 (en) 1977-12-30
BE861611A (fr) 1978-03-31

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