CA512582A - Thermally treating precious and semi-precious stones - Google Patents

Thermally treating precious and semi-precious stones

Info

Publication number
CA512582A
CA512582A CA512582A CA512582DA CA512582A CA 512582 A CA512582 A CA 512582A CA 512582 A CA512582 A CA 512582A CA 512582D A CA512582D A CA 512582DA CA 512582 A CA512582 A CA 512582A
Authority
CA
Canada
Prior art keywords
precious
semi
thermally treating
stones
precious stones
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
CA512582A
Other languages
French (fr)
Inventor
M. Yenni Donald
F. Hart Thomas
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.)
Union Carbide Canada Ltd
Original Assignee
Union Carbide Canada Ltd
Publication date
Application granted granted Critical
Publication of CA512582A publication Critical patent/CA512582A/en
Expired legal-status Critical Current

Links

CA512582A Thermally treating precious and semi-precious stones Expired CA512582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA512582T

Publications (1)

Publication Number Publication Date
CA512582A true CA512582A (en) 1955-05-03

Family

ID=35663658

Family Applications (1)

Application Number Title Priority Date Filing Date
CA512582A Expired CA512582A (en) Thermally treating precious and semi-precious stones

Country Status (1)

Country Link
CA (1) CA512582A (en)

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