Inventor · Thurmont, MD, US

E. Douglas Ramsberg

1Patents
1h-index
5Co-inventors
25Inventor score

Filing activity: Mar 26, 1997 → Mar 26, 1997

Most-cited inventions

PatentTitleAreaCited byStatus
US5958174A Manufacture of telephone debit cards Emerging Cross-Sectional Technologies 66 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.