Portfolio comparison
Almon B. Strowger vs VINCENT J SEDLON
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 447918· 1891
How Almon Strowger Invented the Automatic Telephone Switch
Activity by Decade
1890s1
Company B
VINCENT J SEDLON
Patents indexed
1
Year range
1950
Most recent
1950
mechanicalconsumer_electronics
Top Patents1 enriched
US 2514269· 1950
How a Self-Watering Flowerpot Design Works
Activity by Decade
1950s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.