Unearthing Plants Or Buried Objects Patents (Class 171)

Methods of recovering buried objects (Class 171/1)

Plural alternately usable unearthing units (Class 171/2)

Stabilizing colter or fin (Class 171/3)

With additional earth or plant rolling implement (Class 171/4)

With vertical cutter for vegetation (Class 171/5)

With earth marker or trailing earth conditioner (Class 171/6)

Periodic dumping in piles (Class 171/7)

Drive triggered by desired object (Class 171/8)

Support overload release and reset; drive overload relief; or automatic control (Class 171/9)

With preliminary removal or undesired earth material (Class 171/10)

Removable or alternate collection receptacles (Class 171/11)

With apparatus cleaner in nonrecovery zone of unearthing unit (Class 171/12)

With toothed moving stripper or pick-off for undesired object (Class 171/13)

Recovered object passes through separator interstices (Class 171/14)

Assorting by size (Class 171/15)

Railroad ballast removal and assorting or separating (Class 171/16)

Separation or orientation by fluid current or suspension (Class 171/17)

Separation by physical characteristics (Class 171/18)

With rake or lateral deflector for ground contacting recovered objects (Class 171/19)

With manual operation station (e.g., topping, separation inspection) (Class 171/20)

Holding and severing plant portion in situ (Class 171/21)

Plural level cutters (Class 171/22)

With selective delivery to alternate locations (e.g., by-pass) (Class 171/23)

With comminuting or multiple cutting of recovered plant part (Class 171/24)

With cleaning of recovered object by brushing or wiping (Class 171/25)

With above-ground means for detachment of plant part (Class 171/26)

Combined or convertible (Class 171/43)

Power means to shift unearthing unit part (Class 171/44)

Tractor powered trailing unearthing unit (Class 171/45)

Unearthing unit detachable from vehicle chassis (Class 171/46)

Unearthing unit laterally shiftable on support (Class 171/47)

Separate draft connections to unearthing unit and unearthing unit support (Class 171/48)

Moved object void filling or earth hold down (Class 171/49)

Extractor (Class 171/50)

Stone gathering and/or unearthing by impelling above-ground plant or object portion (Class 171/63)

Ground engaging chain separators (Class 171/66)

With preliminary deflector for surface material (Class 171/67)

Transversely moving single tine row (Class 171/70)

Plow or blade continguous to vibrating separator (Class 171/71)

Unearthing unit rocking or fulcrumed on ground (Class 171/82)

Leading plow or cutter with contiguous, fixed inclined separator (Class 171/83)

Separating digger (e.g., vertical collecting tines) (Class 171/84)

Traction wheel drive details for unearthing unit part (Class 171/108)

Unearthing unit or vehicular break-frame (Class 171/109)

Digger and moving conveyer unit adjustable relative to chassis (Class 171/110)

Earth removal and separation (Class 171/111)

With protective guard or casing (Class 171/137)

With material redirecting conveyer or chute (Class 171/138)

Unearthing unit fixed on vertically shiftable vehicle frame (Class 171/139)

Unearthing unit with gauge runner or wheel (Class 171/140)

Lifting or tilting means for unearthing apparatus (Class 171/141)

Drive details (e.g., clutch or gearing) (Class 171/142)

Frames and/or wheeled chassis (Class 171/143)

Miscellaneous (e.g., hopper or collector) (Class 171/144)

Foreign Patent Art Collections

Class-related foreign documents (Class 171/FOR000)

Digests

Peanut digger (Class 171/DIG1)