One-man posthole digger

作者: Clarence M Cox

DOI:

关键词: Artificial intelligenceEngineeringObject (computer science)Human–computer interaction

摘要: This inpention appertains to, novel and. useful improvements in devices utilized particularly obliviating. a portion of the labor involved dfgging holes, particularly. fr posts, pdlesan"dthe like , fo o e ad t An. object this-inventionis to provide means for jburialing' frane member-...

参考文章(1)
Dunn John, POST HOLE DIGGER ,(1906)