Excavating – Ditch filler
Patent
1978-02-27
1980-02-12
Eickholt, E. H.
Excavating
Ditch filler
37142R, 172719, E02F 928
Patent
active
041876261
ABSTRACT:
An excavating tool having hard-faced elements supported in the material engaging surface thereof, the elements having generally planar faces disposed at an angle to the ground engaging surface.
REFERENCES:
patent: 1333394 (1920-03-01), Ekman
patent: 1835701 (1931-12-01), Edmunds
patent: 2608111 (1952-08-01), Ratkowski
patent: 3286379 (1966-11-01), Benetti
patent: 3529677 (1970-09-01), Stephenson
patent: 3805423 (1974-04-01), Engel et al.
patent: 4083605 (1978-04-01), College et al.
Greer Donald J.
MacEwan, Jr. John D.
Eickholt E. H.
ESCO Corporation
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