Invention Grant
- Patent Title: Manhole cover venting and precipitation guarding devices
- Patent Title (中): 人孔盖通风和降水防护装置
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Application No.: US14024221Application Date: 2013-09-11
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Publication No.: US08851791B1Publication Date: 2014-10-07
- Inventor: David Putnam
- Applicant: David Putnam
- Agent R. Keith Harrison
- Main IPC: E02D29/14
- IPC: E02D29/14 ; E03F5/08

Abstract:
A manhole cover venting and rain guarding device for a manhole cover having an exterior manhole cover surface and an interior manhole cover surface includes a device housing adapted for attachment to the manhole cover. The device housing includes manhole cover venting and precipitation guarding device includes a device housing adapted for attachment to the manhole cover, the device housing including a head portion having a head portion surface adapted to protrude beyond an entire plane of the exterior manhole cover surface and a device bore extending through the head portion and adapted to communicate with the interior manhole cover surface of the manhole cover.
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