Benjamin_Holt_1894.jpg
Summary
Description Benjamin Holt 1894.jpg |
English:
Benjamin Holt, first to patent a workable tractor-type crawling tread design, at age 45 in 1894.
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Source | http://www.hardhat.com/ME2/Audiences/dirmod.asp?sid=&nm=&type=Publishing&mod=Publications%3A%3AArticle&mid=8F3A7027421841978F18BE895F87F791&id=C7B7A45E312E4D2AA8F2189E32A620E5&tier=4 | |||||||
Author | Unknown author Unknown author | |||||||
Permission
( Reusing this file ) |
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