Drilldown: Patents

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Patents > Year filed: 1860 - 1869 & Tech fields: None & Number of text pages: 1-2

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Inventors:
William H. Holland (2)
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None (4) · William H. Holland (2)
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None (18) · USPC 244/3.23 (9) · USPC 244/153R (3) · USPC 416/194 (3) · USPC 244/127 (2) · USPC 244/30 (2)
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