Patent
   D381067
Priority
Sep 08 1993
Filed
Mar 07 1994
Issued
Jul 15 1997
Expiry
Jul 15 2011
Assg.orig
Entity
unknown
25
4
n/a
The ornamental design for a valve membrane, as shown and described.

FIG. 1 is a top perspective view of a valve membrane, showing my new design;

FIG. 2 is a perspective view thereof from below;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a cross sectional view thereof;

FIG. 7 is a top perspective view of a second embodiment of a valve membrane;

FIG. 8 is a perspective view thereof from below; and,

FIG. 9 is a bottom plan view thereof.

Karmalm, Charles Willy

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Patent Priority Assignee Title
4089349, Oct 17 1975 ITW-ATECO G.m.b.H. Membrane valve
4148336, Feb 10 1976 Braunschweiger Flammenfilter Leinemann & Co. Pilot controlled membrane valve
4819691, Oct 21 1986 Roplan International AB Valve device
224718,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 02 1994KARMALM, CHARLES WILLYAKTIEBOLAGET WI KA MEKANISKA VERKSTADASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0069050728 pdf
Mar 07 1994Aktiebolaget Wi-Ka Mekaniska Verkstad(assignment on the face of the patent)
Sep 05 1997Aktiebolaget Wi-Ka Mekaniska VerkstadNovaseptic Equipment ABASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0088040726 pdf
Aug 31 2005Novaseptic Equipment ABNOVASEPTIC ABCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0189720596 pdf
Aug 31 2005Novaseptic Equipment AktiebolagNOVASEPTIC ABCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0189720596 pdf
Dec 29 2006NOVASEPTIC ABMillipore ABMERGER SEE DOCUMENT FOR DETAILS 0189720588 pdf
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