Portfolio comparison
Parsons Corp vs George B. Selden
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Parsons Corp
Patents indexed
1
Year range
1958
Most recent
1958
mechanicalmanufacturingaerospaceautomotive
Top Patents1 enriched
US 2820187· 1958
How Early Numerical Control Systems Automated Industrial Milling Machines
Activity by Decade
1950s1
Top Patents1 enriched
US 549160· 1895
George Selden's 1895 Patent for a Road Engine
Activity by Decade
1890s1
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