Portfolio comparison
James Ritty vs Universidad Austral de Chile
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
Top Patents1 enriched
US 8062633· 2011
Using Bacteria to Kill Food-Poisoning Germs on Kitchen Surfaces
Activity by Decade
2010s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.