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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.datamp.org/patents/searc
h/xrefPerson.php?id=7871>

Recent Search Bios FAQ