Portfolio comparison
Hovercraft Development Ltd vs Palo Alto Research Center Inc
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
Company B
Palo Alto Research Center Inc
Patents indexed
1
Year range
2016
Most recent
2016
telecommunicationssoftwareai_ml
Top Patents1 enriched
US 9276922· 2016
How to Securely Pass Data Packets Within a Trusted Network
Activity by Decade
2010s1
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