Door knob

Details Door knob Door knob

2007-10-12

2008-10-28

Greene, Paula (Department: 2912)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0579303

CLAIM:
The ornamental design for a door knob, as shown.

REFERENCES:
patent: 2797950 (1957-07-01), Michael
patent: D185098 (1959-05-01), Prescott
patent: D217431 (1970-05-01), Russell
patent: D290493 (1987-06-01), Dragos
patent: D327530 (1992-06-01), Rawald
patent: D401834 (1998-12-01), Burns et al.
patent: D540141 (2007-04-01), Berberet
patent: D541619 (2007-05-01), Ricereto
patent: D542622 (2007-05-01), Ricereto
patent: D549544 (2007-08-01), Mattson et al.
patent: D564332 (2008-03-01), McConnell
patent: D567624 (2008-04-01), Ricereto
patent: D570184 (2008-06-01), Ricereto

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