Power excavating device
United States Patent 3065557
US Patent References:
/1041569.html
- - 1041569

Electric hammer attachment
- - 2191608

Excavating bucket
- - 2228445

Percussive tool
- - 2408484

Pavement breaking drill
- - 2905168


Inventors:
Pewthers, Charles W.
Publication Date:
11/27/1962
View Patent Images:
Assignee:
ALBRITTON ENGINEERING CORP
Primary Class:
Other Classes:
37/902, 173/52, 37/447, 173/46, 405/174, 299/108, 172/40, 414/724, 37/904, 299/69, 172/62, 173/206
International Classes:
E02F3/40
Foreign References:
FR894880A
DE922519C