Improvements relating to precast sewage pumping chambers

Read the whole patent

Listed from its IP Australia record in Patent Yard's archive of Australian patents past their term. Its claims, description and drawings are in the AusPat record and on Google Patents, and the Claude kit works from them.

Why it's free to use

• Filed July 10, 1989. An Australian petty patent lasted at most 6 years from its date of patent, at most a year after this filing, so it ended by July 10, 1996.
• We check Australian rights only. A patent in its family in another country could still be in force.