Title:
Power excavating device
United States Patent 3065557
Inventors:
Pewthers, Charles W.
Publication Date:
11/27/1962
Export Citation:
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Assignee:
ALBRITTON ENGINEERING CORP
Primary Class:
299/67
Other Classes:
37/447, 37/902, 37/904, 172/40, 172/62, 173/46, 173/52, 173/206, 299/69, 299/108, 405/174, 414/724
International Classes:
E02F3/40; E02F3/40
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US Patent References:
2905168Pavement breaking drill
2408484Percussive tool
2228445Excavating bucket
2191608Electric hammer attachment
1041569N/A
Foreign References:
FR894880A
DE922519C