Wireless intercom system

Details for Australian Patent Application No. 2002351298 (hide)

Owner 3M Innovative Properties Company

Inventors Medek, James C; Hall, Ronald W; Fletcher, Douglas D

Agent Davies Collison Cave

Pub. Number AU-B-2002351298

PCT Number PCT/US02/39164

PCT Pub. Number WO2003/061147

Priority 10/050,308 15.01.02 US

Filing date 6 December 2002

Wipo publication date 30 July 2003

Acceptance publication date 29 November 2007

International Classifications

H04B 1/38 (2006.01) Details of transmission systems, not covered by a single one of groups - Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving

H04M 1/725 (2006.01) Substation equipment, e.g. for use by subscribers

Event Publications

20 March 2003 Complete Application Filed

  Priority application(s): 10/050,308 15.01.02 US

4 September 2003 Application Open to Public Inspection

  Published as AU-B-2002351298

29 November 2007 Application Accepted

  Published as AU-B-2002351298

3 April 2008 Standard Patent Sealed

2 July 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This patent ceased under section 143(a), or Expired. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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