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Books by Great Britain. Patent Office, Bennet Woodcroft

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... Reference Index Of Patents Of Invention, From March 2, 1617 (14 James I.) To October 1, 1852 (16 Victoriae).: Pointing Out The Office In Which ... Books Containing Notices Of Specifications
... Reference Index Of Patents Of Invention, From March 2, …
By: Great Britain. Patent Office, Bennet Woodcroft
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