CA512581A - Thermally working precious and semi-precious stones - Google Patents

Thermally working precious and semi-precious stones

Info

Publication number
CA512581A
CA512581A CA512581A CA512581DA CA512581A CA 512581 A CA512581 A CA 512581A CA 512581 A CA512581 A CA 512581A CA 512581D A CA512581D A CA 512581DA CA 512581 A CA512581 A CA 512581A
Authority
CA
Canada
Prior art keywords
precious
semi
stones
thermally working
thermally
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
CA512581A
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 CA512581A publication Critical patent/CA512581A/en
Expired legal-status Critical Current

Links

CA512581A Thermally working precious and semi-precious stones Expired CA512581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA512581T

Publications (1)

Publication Number Publication Date
CA512581A true CA512581A (en) 1955-05-03

Family

ID=35663657

Family Applications (1)

Application Number Title Priority Date Filing Date
CA512581A Expired CA512581A (en) Thermally working precious and semi-precious stones

Country Status (1)

Country Link
CA (1) CA512581A (en)

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