Portfolio comparison
James L. Plimpton vs FIRM OF M J GOLDBERG und SOHNE
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
James L. Plimpton
Patents indexed
1
Year range
1863
Most recent
1863
mechanicalconsumer_electronics
Top Patents1 enriched
US 37305· 1863
How James Plimpton Invented the Modern Roller Skate
Activity by Decade
1860s1
Company B
FIRM OF M J GOLDBERG und SOHNE
Patents indexed
1
Year range
1928
Most recent
1928
consumer_electronicsmechanical
Top Patents1 enriched
US 1661058· 1928
How the Theremin Makes Music Without Touching Anything
Activity by Decade
1920s1
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