Portfolio comparison
ELECTRO STRING INSTR CORP vs IpVenture Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
ELECTRO STRING INSTR CORP
Patents indexed
1
Year range
1937
Most recent
1937
consumer_electronicsmechanical
Top Patents1 enriched
US 2089171· 1937
How the Frying Pan Guitar Created the Electric Guitar
Activity by Decade
1930s1
Company B
IpVenture Inc
Patents indexed
1
Year range
2010
Most recent
2010
ecommercesoftwareconsumer_electronics
Top Patents1 enriched
US 7801772· 2010
How Online Stores Automatically Block Illegal Alcohol and Tobacco Deliveries
Activity by Decade
2010s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.