Confirmed; the US Patent Office says "Patent Expired Due to NonPayment of Mainte... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

ctdonath on Sept 28, 2012 | parent | context | favorite | on: Patent US6368227 - Method of swinging on a swing

Confirmed; the US Patent Office says "Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362".

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact