Portfolio comparison
James Ritty vs Harvard University
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 271363· 1883
How James Ritty's First Cash Register Tracked Sales
Activity by Decade
1880s1
Company B
Harvard University
Patents indexed
1
Year range
1988
Most recent
1988
biotechpharmaceuticalresearch_tools
Top Patents1 enriched
US 4736866· 1988
Mice Engineered to Develop Cancer for Research
Activity by Decade
1980s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.