Invention Grant
- Patent Title: Drainage unit with external covering and method for manufacture
- Patent Title (中): 排水装置外置盖板及制造方法
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Application No.: US11562199Application Date: 2006-11-21
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Publication No.: US08256990B2Publication Date: 2012-09-04
- Inventor: Dennis W. Koerner
- Applicant: Dennis W. Koerner
- Applicant Address: US CT Old Saybrook
- Assignee: EZFlow, L.P.
- Current Assignee: EZFlow, L.P.
- Current Assignee Address: US CT Old Saybrook
- Agent C. Nessler
- Main IPC: E02B11/00
- IPC: E02B11/00
Abstract:
Drainage units comprise lightweight aggregate held within a perforated sleeve having an exterior surface, where at least a portion of the exterior surface comprises a barrier material which is substantially impervious to solids.
Public/Granted literature
- US20070166106A1 DRAINAGE UNIT WITH EXTERNAL COVERING AND METHOD FOR MANUFACTURE Public/Granted day:2007-07-19
Information query
