Portfolio comparison
Theophilus Van Kannel vs Augwind
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 387571· 1888
How the Revolving Door Was Invented
Activity by Decade
1880s1
Company B
Augwind
Patents indexed
1
Year range
2022
Most recent
2022
energytelecommunicationsmechanicalsoftwareclean_energy
Top Patents1 enriched
US 11532949· 2022
How Heated Water and Compressed Air Generate Electricity
Activity by Decade
2020s1
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