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xc-patents:xc-1291

Patent XC-1291: 1861-11-28, An improved mode of operating variable expansion steam cut-off valves

X Number Date Inventor City Title
XC-1291 1861-11-28 Alexander S. Walbridge Bedford, QC Canada An improved mode of operating variable expansion steam cut-off valves

Comments

XC patents are Canadian patents issued between 1824 and 1869.

Information Sources

(To be filled in.)

xc-patents/xc-1291.txt · Last modified: 2019/05/25 00:16 (external edit)