Portfolio comparison
ELECTRO STRING INSTR CORP vs General Mills 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
General Mills Inc
Patents indexed
1
Year range
1981
Most recent
1981
materialsconsumer_electronics
Top Patents1 enriched
US 4267420· 1981
How Microwave Crisping Sleeves Work
Activity by Decade
1980s1
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