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Patent
   D251255
Priority
May 18 1977
Filed
May 18 1977
Issued
Mar 06 1979
Expiry
Mar 06 1993
Inventors
Hansen, Ge…
Assg.orig
Crane Co.
Assg.curr
Crane Co.
Entity
unknown
Referenced by
11
References
5
Maint.:
n/a
The ornamental design for a butterfly valve, as shown.

FIG. 1 is a front elevational view of a butterfly valve showing my design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is a bottom plan view thereof.
INVENTORS:

Hansen, George E., McInerney, John A.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D410070, Feb 03 1998 Butterfly valve
D739921, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D755937, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D756490, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D756491, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D756492, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D756493, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D761393, Apr 26 2013 AEGIS FLOW TECHNOLOGIES, L L C Bleed ring body
D872836, Oct 03 2018 A R ARENA PRODUCTS, INC Butterfly valve
D873966, Feb 16 2018 ASAHI YUKIZAI CORPORATION Butterfly valve
ER6193,
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2122560,
3485476,
4007910, Nov 30 1972 Kubota, Ltd. Butterfly valve apparatus
198885,
198886,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 18 1977Crane Co.(assignment on the face of the patent)
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