Portfolio comparison
William F. Semple vs Sperry Rand Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 98304· 1869
William Semple's 1869 Patent for Improved Chewing Gum
Activity by Decade
1860s1
Top Patents1 enriched
US 3120606· 1964
How the ENIAC Computer Processes Data Using Electronic Pulses
Activity by Decade
1960s1
How to use
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