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Patent Archive
#2417437

Patent Information

Method Apparatus Produce Sapphire Hollow Art

M. C. Cannon

May 31, 1949

Patent #2417437
Manufacturer:Elgin
Patent Number:2417437
Description:Method Apparatus Produce Sapphire Hollow Art
Inventor(s): M. C. Cannon
Assignee:Elgin Natl Watch Co
Patent Date:May 31, 1949
Registration Type:Patent
External Research:https://www.google.c…
Patent Document:  PDF