Portfolio comparison
Bellicon AG vs Marvin C. Stone
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US RE49995· 2024
How Trampoline Hook Elements Prevent Strap Wear
Activity by Decade
2020s1
Top Patents1 enriched
US 375962· 1888
How the Modern Paper Drinking Straw Was Invented
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.