USPatentGranted
S1

Filter element with centerpiece

Granted 6 Feb 2001 · no office action yet

Assignee: Donaldson Company, Inc.

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Inventors: Edward A. Steinbrueck, Wayne R. W. Bishop, Wayne C. Musselman, Steven Scott Gieseke +2 · Examiner: Lisa Lichtenstein · AU 2911 · TC 2900

Application
113520
filed 5 Nov 1999
Publication
Not published
not published
Patent· this page
US D437402
granted 6 Feb 2001

Life of the patent

2 dated events
⤢ drag to zoomOct 1999Jan 2000Apr 2000Jul 2000Oct 2000Jan 2001Apr 2001Prosecution
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Description

1 parts
›FIG. 1 is a schematic, perspective view of…

FIG. 1 is a schematic, perspective view of a filter element with centerpiece embodying our new design, the fluted filter media being shown schematically in the upper face;

FIG. 2 is another schematic, perspective view of a filter element with centerpiece depicted in FIG. 1, the fluted filter media being shown schematically in only a portion of the upper face but being representative of the entire face;

FIG. 3 is a front elevational view of the design depicted in FIG. 2, the rear elevational view being a mirror image thereof;

FIG. 4 is a right elevational view of the design depicted in FIG. 2, the left elevational view being a mirror image thereof;

FIG. 5 is a top plan view of the design depicted in FIG. 2; and,

FIG. 6 is a bottom plan view of the design depicted in FIG. 2.

the grant prints no section headings; every part label below is ours, taken from that part's own first words

Claims

1 · 1 independent · depth 1
1 granted claims

Classifications

1 codes
USPC · US Patent Classification
D23/365

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File wrapper

Pendency
1.3 y
459 days filing → grant
Office actions
0
on the grant's record
Examiner
Lisa Lichtenstein
art unit 2911 · TC 2900
Citations: 14 back · 0 forward

Chain of title

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Worldwide family

2 members · 2 offices
US1AU1
this patentIP5 & PCTother officessolid = grantedhover for detail · click to open
Members
2
DOCDB simple family 22349912
Offices
2
US
Granted
1 of 2
grant date present
›IP5 & PCT — 1 members
OfficePublicationKindPublishedFiledStatusTitle
USthis patentUS-D437402-SS16 Feb 20015 Nov 1999grantedFilter element with centerpiece
›Other offices — 1 members
OfficePublicationKindPublishedFiledStatusTitle
AUAU-146694-SS4 Feb 200226 Apr 2000publishedFilter element with centerpiece

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Citations

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