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Inventor: Proia; Gianfranco A.
Address: Los Angeles, CA
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4651517 |
Jewelry rope chain |
March 24, 1987 |
| The disclosure sets forth a different annular link as the building element; instead of using a split annular link of a 3:1 ratio of link inner diameter to major wire diameter, the link has substantially thinner annulus for forming the rope chain, an annulus that requires an over 5:1 |
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