Portfolio comparison
Arnold O. Beckman vs Theophilus Van Kannel
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Arnold O. Beckman
Patents indexed
1
Year range
1936
Most recent
1936
biotechmechanicalsemiconductors
Top Patents1 enriched
US 2058761· 1936
How Arnold Beckman Invented the Modern pH Meter
Activity by Decade
1930s1
Top Patents1 enriched
US 387571· 1888
How the Revolving Door Was Invented
Activity by Decade
1880s1
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