Plastic contact bacteria starter for septic tanks

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Description

FIG. 1 is a side elevational view of a plastic contact bacteria starter for septic tanks device showing my new design, with all sides being identical to that shown;

FIG. 2 is a front elevational view thereof, taken from the left of FIG. 1; and,

FIG. 3 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
4169050 September 25, 1979 Serfling et al.
4415450 November 15, 1983 Wolverton
4749493 June 7, 1988 Hicks
4863606 September 5, 1989 Ryall
5126042 June 30, 1992 Malone
5202027 April 13, 1993 Stuth
5217616 June 8, 1993 Sanyal et al.
5232586 August 3, 1993 Malone
5298164 March 29, 1994 Hapach et al.
5352357 October 4, 1994 Perry
5645732 July 8, 1997 Daniels
5647986 July 15, 1997 Nawathe et al.
Foreign Patent Documents
582307 September 1959 CAX
1061241 August 1979 CAX
2074470 July 1991 CAX
Patent History
Patent number: D403738
Type: Grant
Filed: Apr 19, 1996
Date of Patent: Jan 5, 1999
Inventor: Thomas F. Hall (Pitt Meadows, British Columbia)
Primary Examiner: Stella Reid
Attorney: David L. Davis
Application Number: 0/56,330
Classifications
Current U.S. Class: Underground Type (e.g., Septic Tank, Etc.) (D23/203)
International Classification: 2301;