Programmable logic controller (PLC)

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

FIG. 1 is a front elevational view of a programmable logic controller (PLC) showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is left-side elevation view thereof; and,

FIG. 7 is a perspective view thereof.

The broken line portion of the figure drawings is included to show unclaimed subject matter only and forms no part of the claimed design.

Claims

The ornamental design for a programmable logic controller (PLC), as shown and described.

Referenced Cited
U.S. Patent Documents
D269605 July 5, 1983 Provanzano et al.
D281493 November 26, 1985 Prager et al.
D302972 August 22, 1989 Boucher
D307263 April 17, 1990 Ishida
4920453 April 24, 1990 Onose et al.
D309446 July 24, 1990 Russell
6008985 December 28, 1999 Lake et al.
6172875 January 9, 2001 Suzuki et al.
6686672 February 3, 2004 Brown et al.
D488133 April 6, 2004 Droulin et al.
6904471 June 7, 2005 Boggs et al.
D511150 November 1, 2005 Nurmi et al.
7027296 April 11, 2006 Bock
D524760 July 11, 2006 Ohlwine et al.
D527349 August 29, 2006 Lee
D563903 March 11, 2008 Radau et al.
D588552 March 17, 2009 Radau et al.
D598867 August 25, 2009 Nada et al.
D692397 October 29, 2013 Liu et al.
D702647 April 15, 2014 Liu et al.
Patent History
Patent number: D733665
Type: Grant
Filed: Jun 15, 2012
Date of Patent: Jul 7, 2015
Assignee: Siemens Aktiengesellschaft (Munich)
Inventor: Ulrich Ringer (Amberg)
Primary Examiner: Selina Sikder
Application Number: 29/424,798
Classifications