Portfolio comparison
Parsons Corp vs Phillips Screw Co
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
Company B
Phillips Screw Co
Patents indexed
1
Year range
1936
Most recent
1936
mechanicalautomotiveconsumer_electronics
Top Patents1 enriched
US 2046343· 1936
The Invention of the Phillips Head Screw
Activity by Decade
1930s1
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