David Putnam

City:

Calhoun, Louisiana

Country:

United States

Published Applications:

Last publication date:

2018-01-23

Recent patent applications by Putnam David

David Putnam from Calhoun, US has applied for patents for these inventions. The list has both pending applications and granted patents:

Wastewater pump station venting system and method

Vented precipitation guarding manhole cover assemblies

Manhole cover venting and precipitation guarding devices

InventorID:

7170299 ⎘