InventHelp Inventor Develops New Walk Behind Milling Machine (BTK-424)

PITTSBURGH, May 18, 2026 /PRNewswire/ -- "I'm a paving contractor, and I wanted to create a walk-behind machine to mill asphalt alongside or around gutters, drains, curbs, sidewalks, manhole covers, and other areas," said an inventor, from Wedowee, Ala., "so I invented the WALK BEHIND...