CA157477A
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Ring forming machine
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US1094145A
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Machine for rolling finger-rings.
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US1059993A
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Ring-forming apparatus.
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CA142304A
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Ring making machine
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US1105560A
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Ring-forming apparatus.
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CA155739A
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Machine for making finger rings
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US1045841A
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Process of forming rings.
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US1124434A
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Machine for rolling finger-rings.
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US1105559A
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Ring-forming apparatus.
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CA127565A
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Swaging machine
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CA128366A
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Ring forming machine
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CA128365A
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Machine for marking finger rings
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CA128364A
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Machine for rolling finger rings
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US1026983A
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Machine for rolling finger-rings.
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US1024004A
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Ring-forming machine.
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US979297A
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Machine for marking finger-rings.
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US953616A
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Swaging-machine.
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