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Lava Lamp Display Device Patent Print Patent Title: Display Device Inventor Name: Edward C. Walker Year Issued: March 16 1971 Item...read more
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Lava Lamp Display Device Patent Print Patent Title: Display Device Inventor Name: Edward C. Walker Year Issued: March 16 1971 Item Number: 11163 Reprint of original Patent Patent is printed on premium acid-free heavyweight ancient gold col...