Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Design Patent
2005-04-19
2005-04-19
Davis, Antoine D. (Department: 2913)
Machines not elsewhere specified
Material working, abrading, or founding machinery
Element or attachment
Design Patent
active
D0504141
CLAIM:
The ornamental design for a driver drill bit, as shown and described.
REFERENCES:
patent: D416029 (1999-11-01), Cosic
patent: 0 358 786 (1990-03-01), None
Concentrix Overburden Drilling System.
Outils de forage Sandvik Coromant TUBEX.
Charland Luc
Charland Roger
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