Portfolio comparison
Wham O Manufacturing Co vs Hookless Fastener Co
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
Company B
Hookless Fastener Co
Patents indexed
1
Year range
1917
Most recent
1917
mechanicalconsumer_electronics
Top Patents1 enriched
US 1219881· 1917
How Gideon Sundback Invented the Modern Zipper
Activity by Decade
1910s1
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