Boring or penetrating the earth – Means carried by housing insertable in inaccessible hole to...
Patent
1996-09-11
1998-09-22
Dang, Hoang C.
Boring or penetrating the earth
Means carried by housing insertable in inaccessible hole to...
173 29, 173 46, 173185, 175 87, 175162, E21B 702
Patent
active
058101012
ABSTRACT:
A digger from a unit for digging utility pole holes is encased in an elongated box. The box has an attachment thereon for attachment to the carrying arm of a backhoe in place of the backhoe bucket. A 90.degree. attachment provides versatility. The digger is thus capable of digging horizontal tunnels for laying one underground line under another underground line.
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Author--Production Diggers, Inc. a Sales Brouchure, Title--Production Diggers, Inc. a Sales Brouchure Date Estimate 1996 a Sales Brochure.
Caraway, Jr. John
McMillan George
Coffee Wendell
Dang Hoang C.
Engineering Crossing Systems, (Partnership)
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