Portfolio comparison
Zenith Radio Corp vs Ziehm Imaging
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Zenith Radio Corp
Patents indexed
1
Year range
1957
Most recent
1957
consumer_electronicsmechanical
Top Patents1 enriched
US 2817025· 1957
How the First Wireless Television Remote Control Works
Activity by Decade
1950s1
Top Patents1 enriched
US 12357189· 2025
How Medical Scanners Track Surgical Tools in Real-Time
Activity by Decade
2020s1
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