OldTools Archive
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265394 | John Leyden <leydenjl@g...> | 2018‑03‑12 | Re: boxed stone |
Ed inquires: “did augers have lips and lead screws in 1817?” According to DATAMP, apparently at least as early as 1809. http://www .datamp.org/patents/search/xrefPerson.php?id=7871 <http://www.datam p.org/patents/search/xrefPerson.php?id=7871">http://www.datamp.org/patents/searc h/xrefPerson.php?id=7871> |
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