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Pictures Of Co Bartlett Magnetic Separator Cleveland Ohio Patent 1888

If the broad claim could be held to be patentable to wood, the effect of a patent upon it to him would be unjustly retroactive, for it would sweep within its control all specific inventions in the same field made previously to the time when he made his claimhicago northwestern railway coayles, 15 o243 97554, cited.

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