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Patent
   D261925
Priority
Mar 27 1979
Filed
Sep 21 1979
Issued
Nov 17 1981
Expiry
Nov 17 1995
Inventors
Laakkonen,…
Assg.orig
Oy Kolster…
Assg.curr
TEMET OY, …
Entity
unknown
Referenced by
3
References
10
Maint.:
n/a
The ornamental design for an over-pressure valve for ventilation, as shown and described.

FIG. 1 is a perspective view taken from the top and one side of an over-pressure valve for ventilation showing my new design; and

FIG. 2 is a perspective view taken from the bottom and side opposite that shown in FIG. 1.
INVENTORS:

Laakkonen, Launo

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D637707, Apr 16 2010 Light My Fire Sweden AB Grip for a fire iron
D640364, Apr 16 2010 Light My Fire Sweden AB Grip for a fire iron
D765827, Mar 01 2012 Bentley Motors Limited Air vent
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3140648,
3232208,
3369476,
3459114,
3489073,
3516348,
206466,
231099,
231100,
D252640, Mar 12 1976 Air filter
ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Sep 21 1979Oy Kolster AB(assignment on the face of the patent)
Jul 09 1981LAAKKONEN LAUNOTEMET OY, TULPPATIE 20, 00810 HELSINKI 81, FINLAND A FIRM OF FINLANDASSIGNMENT OF ASSIGNORS INTEREST 0038830647 pdf
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