Portfolio comparison
Energy Partners Inc vs Sperry Rand Corp
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 3120606· 1964
How the ENIAC Computer Processes Data Using Electronic Pulses
Activity by Decade
1960s1
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