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The ornamental design for a door knocker, as shown. |
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FIG. 1 is a front elevational view of a door knocker showing our new design;
FIG. 2 is a side elevational view taken from the right of FIG. 1, the side opposite being a mere image thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is an enlarged sectional view taken in the direction of the arrows on line 6--6 of FIG. 1; and
FIG. 7 is an enlarged sectional view taken in the direction of the arrows on line 7--7 of FIG. 4.
Kupperman, Dennis, Kupperman, Sam
| Patent | Priority | Assignee | Title |
| 5426891, | Apr 04 1994 | Door knocker with invisible lenticular breast plate | |
| D625592, | Jan 04 2010 | Set of door knockers | |
| D977822, | Oct 29 2022 | Wooden textured key fob |
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 27 1977 | RB Toy Development Co. | (assignment on the face of the patent) | / |
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