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Spring Balance Patent Print - Chalkboard Patent Title: Spring-balance Inventor Name: Amos Shepard Year Issued: May 8 1894 Item...read more
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Spring Balance Patent Print - Chalkboard Patent Title: Spring-balance Inventor Name: Amos Shepard Year Issued: May 8 1894 Item Number: 13864 Reprint of original Patent Patent is printed on premium acid-free heavyweight matte paper giving i...