PATENTS OF INVENTION. Abridgements of Specifications. Class - Lot 7

Lot 7
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PATENTS OF INVENTION. Abridgements of Specifications. Class - Lot 7
PATENTS OF INVENTION. Abridgements of Specifications. Class 139. Watches, Clocks, and other Timekeepers, 1855-1930. Réédition en 2 volumes, Seattle 1979.
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