Title:
Method of making synthetic quartz cat's-eye gem
United States Patent 2948082


Inventors:
Estell, Watson John
Application Number:
US70543757A
Publication Date:
08/09/1960
Filing Date:
12/26/1957
Assignee:
Estell, Watson John
Primary Class:
Other Classes:
63/32, 65/62, 65/66
International Classes:
C30B29/26
View Patent Images: