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Patent
D255541
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Priority
Sep 07 1978
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Filed
Sep 07 1978
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Issued
Jun 24 1980
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Expiry
Jun 24 1994
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Assg.orig
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Entity
unknown
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2
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2
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n/a
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The ornamental design for a security screw, substantially as shown and described.
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FIG. 1 is an isometric view of a security screw showing my new design, the
shank being partially shown to indicate indeterminate length;
FIG. 2 is a top plan view thereof; and
FIG. 3 is a side elevational view thereof, shown partially as in FIG. 1.
Olmstead, Charles H., Simone, James V.
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 07 1978 | | Wright Line Inc. | (assignment on the face of the patent) | | / |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a