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US Patent 363841
May 31, 1887
Roller Organ Design
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US Patent 322390
July 14, 1885
Roller Design
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US Patent 315052
May 1, 1884
Roller Manufacturing Equipment
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US Patent 196529
October 30, 1877
Autophone Design
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US Patent 210424
December 3, 1878
Autophone Design
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US Patent Reissue 9830
August 9, 1881
Autophone Design
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US Patent 841424
January 15, 1907
Roller Organ incorporated into design by [Children's] Health Merry-Go-Round Co.
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