Portfolio comparison
Hovercraft Development Ltd vs Contemporary Amperex Technology Co
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Hovercraft Development Ltd
Patents indexed
1
Year range
1967
Most recent
1967
automotiveaerospacemechanicaltransportation
Top Patents1 enriched
US 3321037· 1967
How Hovercrafts Use Flexible Skirts to Ride on Air
Activity by Decade
1960s1
Top Patents1 enriched
US 20240047988
Smartly Turning On and Off a Vehicle Battery Charger
How to use
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