Portfolio comparison
ELECTRO STRING INSTR CORP vs Philips Broadcast Equipment Corp
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
Philips Broadcast Equipment Corp
Patents indexed
1
Year range
1972
Most recent
1972
consumer_electronicsmechanicaltelecommunications
Top Patents1 enriched
US 3678182· 1972
How Early Television Systems Isolated Specific Colors for Special Effects
Activity by Decade
1970s1
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