Portfolio comparison
Energy Partners Inc vs EVINRUDE MOTOR CO
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 5346778· 1994
Boosting Fuel Cell Power for Vehicles Using Oxygen Injection
Activity by Decade
1990s1
Top Patents1 enriched
US 1001260· 1911
How Ole Evinrude Invented the Modern Portable Outboard Motor
Activity by Decade
1910s1
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