Portfolio comparison
DUAL PARKING METER Co vs Prodigy Services Co
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 2118318· 1938
How the First Coin-Operated Parking Meter Works
Activity by Decade
1930s1
Company B
Prodigy Services Co
Patents indexed
1
Year range
1994
Most recent
1994
telecommunicationssoftwareecommerceconsumer_electronics
Top Patents1 enriched
US 5347632· 1994
Prodigy's System for Interactive Online Information and Shopping
Activity by Decade
1990s1
How to use
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