Portfolio comparison
Almon B. Strowger vs Buffalo Forge Co
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
Top Patents1 enriched
US 808897· 1906
How Willis Carrier Invented the Modern Air Conditioner
Activity by Decade
1900s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.