Portfolio comparison
Lewis E. Waterman vs FARBENFABRIKEN OF ELBERFELD Co
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Lewis E. Waterman
Patents indexed
1
Year range
1884
Most recent
1884
mechanicalconsumer_goodsmanufacturing
Top Patents1 enriched
US 293545· 1884
How Lewis Waterman's Original Fountain Pen Design Worked
Activity by Decade
1880s1
Top Patents1 enriched
US 644077· 1900
How Felix Hoffmann Invented Aspirin
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.