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Patent
D246251
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Priority
Oct 14 1975
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Filed
Oct 14 1975
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Issued
Nov 01 1977
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Expiry
Nov 01 1991
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Assg.orig
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Entity
unknown
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9
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3
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n/a
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The ornamental design for a "vacuum breaker for valve stem packing," as shown.
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FIG. 1 is a top plan view of a vacuum breaker for valve stem packing
showing our new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a perspective cross sectional view taken on line 3--3 of FIG. 1;
and
FIG. 4 is an exploded perspective view thereof.
Hirsch, Elder F., Hirsch, Ronald F.
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