Three dimensional filter frame

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of showing the new design for a three dimensional filter frame.

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a front elevation view thereof,

FIG. 5 is a back elevation view thereof;

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

FIG. 7 is a bottom plan view thereof.

Broken lines in the drawings provide environmental structure and form no part of the design to be patented.

Claims

The ornamental design for a three dimensional filter frame, as shown and described.

Referenced Cited
U.S. Patent Documents
1251018 December 1917 Hart
1743675 January 1930 Anders
3724671 April 1973 Tate
3793692 February 1974 Tate
D449100 October 9, 2001 Sundet
6328778 December 11, 2001 Richerson
D599465 September 1, 2009 Mitchell
D685898 July 9, 2013 Platt
8500839 August 6, 2013 Crabtree
D708311 July 1, 2014 Platt
D831182 October 16, 2018 Gregerson
20090019824 January 22, 2009 Lawrence
20090183477 July 23, 2009 Workman
20140109534 April 24, 2014 Rahmathullah
Patent History
Patent number: D877876
Type: Grant
Filed: Sep 7, 2018
Date of Patent: Mar 10, 2020
Assignee: 3M INNOVATIVE PROPERTIES COMPANY (Saint Paul, MN)
Inventors: Scott A. Clear (Escondido, CA), Michael S. Schuffert (Chatsworth, CA)
Primary Examiner: Sheryl Lane
Assistant Examiner: Calvin E Vansant
Application Number: 29/662,776
Classifications
Current U.S. Class: Filter (D23/365); Element (D23/358)