Dan O'Brien was the inventor and patent holder of the O'Brien Lapidary Device. O'Brien Lapidary Device US Patent # 2,542,698 The device is used to position a gem or precious stone for grinding and polishing facets. See attached photo of Dan operating his device in his living room.
He owned and ran O'Brien Lapidary Equipment Company, a store and mail order business in Hollywood, CA.
The second picture shows Dan, his wife Marie and their daughter.
He owned and ran O'Brien Lapidary Equipment Company, a store and mail order business in Hollywood, CA.
The second picture shows Dan, his wife Marie and their daughter.
Dan O'Brien was the inventor and patent holder of the O'Brien Lapidary Device. O'Brien Lapidary Device US Patent # 2,542,698 The device is used to position a gem or precious stone for grinding and polishing facets. See attached photo of Dan operating his device in his living room.
He owned and ran O'Brien Lapidary Equipment Company, a store and mail order business in Hollywood, CA.
The second picture shows Dan, his wife Marie and their daughter.
He owned and ran O'Brien Lapidary Equipment Company, a store and mail order business in Hollywood, CA.
The second picture shows Dan, his wife Marie and their daughter.
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