Portfolio comparison
Theophilus Van Kannel vs Dhol New Ventures LLC
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 387571· 1888
How the Revolving Door Was Invented
Activity by Decade
1880s1
Company B
Dhol New Ventures LLC
Patents indexed
1
Year range
2008
Most recent
2008
consumer_electronicsmechanical
Top Patents1 enriched
US RE40324· 2008
How a Handheld Thumb-Controlled Computer Mouse Works
Activity by Decade
2000s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.