Portfolio comparison
James Industries Inc vs Almon B. Strowger
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
James Industries Inc
Patents indexed
1
Year range
1947
Most recent
1947
mechanicalconsumer_electronics
Top Patents1 enriched
US 2415012· 1947
How the Slinky Toy Works
Activity by Decade
1940s1
Top Patents1 enriched
US 447918· 1891
How Almon Strowger Invented the Automatic Telephone Switch
Activity by Decade
1890s1
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