PITTSBURGH, Nov. 25, 2025 /PRNewswire/ -- "I thought there should be a way to create a flush pavement surface over recessed manhole covers on roadways," said an inventor, from Mount Royal, QC, Canada, ...
PITTSBURGH, Oct. 18, 2018 /PRNewswire/ -- An inventor from Stamford, Conn., has developed the BUMPER COVER, a covering for application over recessed manhole covers in roadways. "I thought of my idea ...
PITTSBURGH, Sept. 11, 2018 /PRNewswire/ -- "I needed an easier way to remove and reinstall the manhole covers attached to water storage tanks," said an inventor from Tampa, Fla. "I came up with this ...
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