Portfolio comparison
Owens Illinois Glass Co vs Guglielmo Marconi
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 2133235· 1938
How Glass Fibers Are Spun for Insulation
Activity by Decade
1930s1
Top Patents1 enriched
US 586193· 1897
How Marconi Patented Early Wireless Telegraphy Signals
Activity by Decade
1890s1
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