Portfolio comparison
Wham O Manufacturing Co vs James Ritty
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Wham O Manufacturing Co
Patents indexed
1
Year range
1967
Most recent
1967
mechanicalconsumer_electronics
Top Patents1 enriched
US 3359678· 1967
How the Modern Frisbee Design Works
Activity by Decade
1960s1
Top Patents1 enriched
US 271363· 1883
How James Ritty's First Cash Register Tracked Sales
Activity by Decade
1880s1
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