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United States Patent D821,190
Healy June 26, 2018

Door knocker


CLAIM The ornamental design for a door knocker, as shown and described.
Inventors: Healy; Michael (Uxbridge, MA)
Name City State Country Type

Healy; Michael



Appl. No.: D/568,862
Filed: June 22, 2016

Current U.S. Class: D8/401
Current International Class: 1006
Field of Search: ;D8/306,400,499,401 ;D10/118 ;116/150,155

References Cited [Referenced By]

U.S. Patent Documents
D145321 July 1946 Marsella
D164954 October 1951 Philippe
D245311 August 1977 Galanthay
4108104 August 1978 Kupperman
D378904 April 1997 Sciuto
D625592 October 2010 Healy
D625593 October 2010 Healy
D639700 June 2011 Adams
D646949 October 2011 Zaksenberg
D666938 September 2012 Dunn
8327793 December 2012 Healy
D723967 March 2015 Youkhana
D726570 April 2015 Puterman
D761686 July 2016 Conner
D790380 June 2017 Healy
Primary Examiner: Rogers; Lakiya G
Assistant Examiner: Blackwell, II; Harold E
Attorney, Agent or Firm: Salter & Michaelson


FIG. 1 is a perspective view of a door knocker;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the door knocker which form no part of the claimed design.

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