Golf clubhead

Games using tangible projectile – Golf – Club or club support

Reexamination Certificate

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Details

C473S342000

Reexamination Certificate

active

07018303

ABSTRACT:
A golf clubhead comprises a face portion having a back surface which is provided around a center region with at least two annular grooves so that the face portion is provided with at least two annular thin parts each being thinner than the center region and at least one rib part between the thin parts, whereby the rebound performance and durability of the face portion can be improved.

REFERENCES:
patent: 5282624 (1994-02-01), Viste
patent: 6299548 (2001-10-01), Lin
patent: 6508722 (2003-01-01), McCabe et al.
patent: 2002/0189356 (2002-12-01), Bissonnette et al.
patent: 2003/0181257 (2003-09-01), Yamamoto
patent: 2003/0195058 (2003-10-01), Rice et al.
patent: 2003/0199335 (2003-10-01), Bissonnette et al.
patent: A-9-168613 (1997-06-01), None
patent: A-9-192273 (1997-07-01), None
patent: A-10-137372 (1998-05-01), None
patent: B2-2813969 (1998-08-01), None
patent: A-11-216204 (1999-08-01), None
patent: 2002239040 (2002-08-01), None
patent: 2002253709 (2002-09-01), None

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