Portfolio comparison
Phillips Screw Co vs Eaton Yale and Towne Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
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
Top Patents1 enriched
US 3552770· 1971
How Early Vehicle Airbag Safety Systems Work
Activity by Decade
1970s1
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