Portfolio comparison
Sperry Gyroscope Co Inc vs Buffalo Forge Co
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
Top Patents1 enriched
US 808897· 1906
How Willis Carrier Invented the Modern Air Conditioner
Activity by Decade
1900s1
How to use
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