1 result found
Howard Griffiths Chilco, ID
Professions & Specialties
Sewer
Experience & Education
United States Patent | Inventor | Appl. No. | Assignee |
---|---|---|---|
#5234018 Aug 10, 1993 Filed: Nov 16, 1992 |
Bruce M. Grachal (Coeur d'Alene, ID) Michael R. Andrews (Coeur d'Alene, ID) Rodney C. Freligh (Hayden Lake, ID) Howard L. Griffiths (Athol, ID) | 7/977140 | |
International Classification: | F16K 1503, F16K 4300 | 137244 |
Patent:
Sewer check valve and cleanout apparatus
Abstract:
Sewer check valve and cleanout apparatus including a valve body, substantially inverted-T in...