Portfolio comparison
James Ritty vs William Stanley, Jr.
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 349611· 1886
William Stanley Jr.'s Early Alternating Current Transformer System
Activity by Decade
1880s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.