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X Patents

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Early American Patents

Early Canadian Patents


Patent XC-3021: 1869-02-19, Hot air drum

X Number Date Inventor City Title
XC-3021 1869-02-19 W. Allchin Paris, ON Canada Hot air drum


XC patents are Canadian patents issued between 1824 and 1869.

Information Sources

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xc-patents/xc-3021.txt · Last modified: 2019/05/25 00:16 (external edit)