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http://www.google.ca/patents/US3323888?utm_source=gb-gplus-share
Patent US3323888 - METHOD FOR MANUFACTURING GLASS BEADS
METHOD FOR MANUFACTURING GLASS BEADS
Ciiarles E. Searight et al
Overview
Abstract
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Description
Claims
Patent number
: 3323888
Filing date
: 17 Mar 1964
Issue date
: 6 Jun 1967
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