CN CN101781060B
The invention discloses a composite artificial wetland sewage treatment system, comprising: a pretreatment pool, the pretreatment pool is connected to a vertical flow artificial wetland pool, the lower part of the vertical flow artificial wetland pool is provided with a horizontal subsurface flow …
A document turning up in a search is not the same as a document that anticipates your claims. Our registered Patent Agents read the claims, not just the abstract, and tell you where you still have room.
Protect Your InventionBibliographic data via the Google Patents index . Republished here for research and prior-art review. This page is not legal advice, and its presence in our index says nothing about the validity or enforceability of the document. For the Indian legal position (status, oppositions, renewals), see InPASS.