Door knob

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FIG. 1 is a side elevational view of a door knob showing my new design, the opposite side is a mirror image;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof; and,

FIG. 4 is a top plan view thereof, the door knob being hollow and having a through passage, the undisclosed bottom is not part of the claimed design.


I claim the ornamental design for a door knob, as shown and described.

Referenced Cited
U.S. Patent Documents
2796627 June 1957 Heyer
D206521 December 1966 Bottom
D411795 July 6, 1999 O'Neil
D445016 July 17, 2001 Dewald et al.
D501390 February 1, 2005 Fields
D502381 March 1, 2005 Fields
D568139 May 6, 2008 Hanes
D582720 December 16, 2008 Plichon
D587555 March 3, 2009 Krumpe et al.
D590691 April 21, 2009 Calatrava Valls
D596916 July 28, 2009 Calatrava Valls
Patent History
Patent number: D629277
Type: Grant
Filed: Mar 18, 2010
Date of Patent: Dec 21, 2010
Assignee: Michael Maltzan Architecture (Los Angeles, CA)
Inventor: Michael Maltzan (Pasadena, CA)
Primary Examiner: Paula Greene
Attorney: William W. Jones
Application Number: 29/349,212
Current U.S. Class: D8/310