Portfolio comparison
Research Corp vs EVINRUDE MOTOR CO
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 1948384· 1934
How Ernest Lawrence Invented the Cyclotron Particle Accelerator
Activity by Decade
1930s1
Top Patents1 enriched
US 1001260· 1911
How Ole Evinrude Invented the Modern Portable Outboard Motor
Activity by Decade
1910s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.