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Patent
   D248485
Priority
Apr 18 1977
Filed
Apr 18 1977
Issued
Jul 11 1978
Expiry
Jul 11 1992
Inventors
Strauss, R…
Assg.orig
Whatman Re…
Assg.curr
WHATMAN PU…
Entity
unknown
Referenced by
25
References
9
Maint.:
n/a
The ornamental design for the filter, as shown and described.

FIG. 1 is a perspective view of a filter showing our new design;

FIG. 2 is a side elevational view thereof, the other sides being the same as the side shown; and

FIG. 3 is an elevational view taken from one end thereof.
INVENTORS:

Strauss, Richard, Kimball, Philip C.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
10874955, Jul 13 2020 Short distillation head with integrated cooling jacket
7441664, May 23 2003 Helen of Troy Limited Water treatment devices and cartridges therefor
D263496, Sep 24 1979 WHATMAN PUBLIC LIMITED COMPANY Filter
D269633, Sep 08 1980 WILLINGER BROS , INC Check valve
D273330, Sep 28 1981 Baxter Travenol Laboratories, Inc. Medical fluid filter
D285606, Nov 19 1982 Gambro Lundia AB Housing for a medical disk filter
D291112, Apr 04 1984 Gardena Kress & Kastner GmbH Combined pressure reducer and fertilizer dispenser
D320258, Aug 15 1985 Aktiebolaget Electrolux Valve
D399299, Mar 05 1997 Liquid filter
D521594, Oct 11 2004 Briggs & Stratton Corporation Filter housing
D805599, Aug 03 2017 Distillation chamber
D805600, Aug 23 2017 Distribution adapter
D819779, Feb 02 2018 Distillation chamber
D849184, Feb 02 2018 Distillation chamber
D849185, Jun 26 2018 Distillation head
D849186, Jun 26 2018 Distillation head
D849187, Jun 26 2018 Distillation head
D875880, Jul 01 2019 Short distillation head comprising a vertical tube filled with a key
D875881, Jul 01 2019 Short distillation head
D913415, Jul 13 2020 Short distillation head with integrated cooling jacket
D914836, Jul 13 2020 Short distillation head with integrated cooling jacket
D919040, Jan 07 2021 Distillation tube with fraction collector
D960286, Sep 14 2020 Short distillation head with integrated cooling spiral
ER155,
ER7221,
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2704544,
2879784,
3002870,
3003500,
3772857,
3815744,
4018687, Jul 26 1976 J T BAKER INC Glass-enclosed integral glass and ceramic filter unit
4062781, Jun 04 1976 WHATMAN PUBLIC LIMITED COMPANY Disposable filter with interchangeable end elements
195296,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 18 1977Whatman Reeve Angel Limited(assignment on the face of the patent)
Jun 23 1983Whatman Reeve Angel LimitedWHATMAN REEVE ANGEL PUBLIC LIMITED COMPANY,CHANGE OF NAME SEE DOCUMENT FOR DETAILS EFFECTIVE SEPT 22,19810041530155 pdf
Feb 01 1990Whatman Reeve Angel Public Limited CompanyWHATMAN PUBLIC LIMITED COMPANYCHANGE OF NAME SEE DOCUMENT FOR DETAILS EFFECTIVE DATE: FEB 1, 19900054010640 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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