Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Design Patent
2008-02-26
2010-06-15
Davis, Antoine D (Department: 2917)
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Design Patent
active
D0617664
CLAIM:
The ornamental design for an internal combustion engine piston ringland gas porting tool, as shown.
REFERENCES:
patent: D322228 (1991-12-01), Hoyt et al.
patent: 5167464 (1992-12-01), Voellmer
patent: 5201130 (1993-04-01), Krchnak
patent: 7490447 (2009-02-01), Ouellette et al.
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