Portfolio comparison
Sperry Gyroscope Co Inc vs Docutel Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 1242065· 1917
How Elmer Sperry Invented the Gyroscopic Compass for Ships
Activity by Decade
1910s1
Company B
Docutel Corp
Patents indexed
1
Year range
1973
Most recent
1973
consumer_electronicssoftwarefinancesemiconductors
Top Patents1 enriched
US 3761682· 1973
Early Automatic Cash Dispenser Using Credit Cards
Activity by Decade
1970s1
How to use
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