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| Number | Title | Issue Date |
| 7160059 | Adjustable angle coupler for leaching chamber systems An adjustable coupler is disclosed for interconnecting leaching chambers to create a serpentine pathway for a leaching field. A coupler can connect a first leaching chamber and a second leaching chamber. The coupler can comprise a mating feature and an adjustment fe... | 01/09/2007 |
| 6592293 | Adjustable angle coupler for leaching chamber systems An adjustable coupler interconnects leaching chambers to create a serpentine pathway for a leaching field. The coupler can comprise a mating feature, which can be used to mate the coupler between a first leaching chamber and a second leaching chamber, and... | 07/15/2003 |
| 6270287 | Leaching chamber A leaching chamber for burial in the ground includes biased ends which permit a series of chambers to arch clockwise or counterclockwise or to continue straight to form a leaching field. Each chamber is identical to every other chamber and includes identi... | 08/07/2001 |
| 6076993 | Leaching chamber A leaching chamber for burial in the ground includes biased ends which permit a series of chambers to arch clockwise or counterclockwise or to continue straight to form a leaching field. Each chamber is identical to every other chamber and includes identi... | 06/20/2000 |
