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A pamphlet of 6 leaves, written by Sir William Petty (1623-1687) and first published in 1648. This pamphlet contained information regarding his invention of the "Art of Double Writing", especially a claim for patent rights. It did not contain any information on what his invention exactly was.
Publish Date
1647
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Feedback?July 18, 2018 | Edited by Dick Bos | short intro |
July 18, 2018 | Edited by Dick Bos | Added new cover |
July 18, 2018 | Edited by Dick Bos | wikipedia & wikisource links |
July 18, 2018 | Created by Dick Bos | Added new book. |