Apparatus for displaying written word and broadcasting speech in water

Details for Australian Patent Application No. 2004100210 (hide)

Owner Tang, D.

Inventors Tang, Der-Guang

Agent Griffith Hack

Pub. Number AU-A-2004100210

Filing date 9 March 2004

Opi date 22 April 2004

International Classifications

B63C 011/26 Equipment for dwelling or working under water

G09F 027/00 Combined visual and audible advertising or displaying, e.g. for public address

H04B 013/02 Transmission systems characterised by the medium used for transmission, not provided for in groups

Event Publications

22 April 2004 Innovation Patent Open to Public Inspection

  Published as AU-A-2004100210

22 April 2004 Innovation Patent Sealed

8 October 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This patent ceased under section 143A(d), or Expired. Examination has not been requested on this patent. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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