Piston hat

Details Piston hat Piston hat

2007-05-15

2007-05-15

Spear, Robert M. (Department: 2913)

Apparel

Body garments

Shirts

Design Patent

active

29238603

CLAIM:
I claim the ornamental design for a piston hat, as shown and described.

REFERENCES:
patent: D224169 (1972-07-01), Rudd
patent: D391039 (1998-02-01), Mongeon
patent: D399990 (1998-10-01), Parson et al.
patent: D421174 (2000-02-01), Williams
patent: D450912 (2001-11-01), Parsons et al.
patent: D468890 (2003-01-01), Davis
patent: D493947 (2004-08-01), Carmody et al.
patent: D499531 (2004-12-01), Carmody et al.
patent: D502588 (2005-03-01), Crews

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