Portfolio comparison
Walter Hunt vs USAI LLC
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 6281· 1849
How Walter Hunt Invented the Modern Safety Pin
Activity by Decade
1840s1
Top Patents1 enriched
US RE50690· 2025
How Recessed Wall Wash Lights Reduce Glare Using Angled Lenses
Activity by Decade
2020s1
How to use
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