Machines not elsewhere specified – Engine – Element or attachment
Design Patent
1999-03-17
2001-02-27
Seifert, Ralf (Department: 2914)
Machines not elsewhere specified
Engine
Element or attachment
Design Patent
active
D0438214
CLAIM:
The ornamental design for filter element, as shown and described.
REFERENCES:
patent: D. 401306 (1998-11-01), Ward et al.
patent: D. 401597 (1998-11-01), Shelton
patent: D. 403414 (1998-12-01), Shelton
patent: D. 407808 (1999-04-01), Nepsund
patent: 3429108 (1969-02-01), Larson
patent: 3672130 (1972-06-01), Sullivan et al.
patent: 4268289 (1981-05-01), Polaner
patent: 4724807 (1988-02-01), Walker
patent: 5800581 (1998-09-01), Gielink et al.
Dushek Robert Allen
Gieseke Steven Scott
Donaldson & Company, Inc.
Merchant & Gould P.C.
Seifert Ralf
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