Portfolio comparison
Black and Decker Inc vs William F. Semple
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Black and Decker Inc
Patents indexed
1
Year range
2021
Most recent
2021
consumer_electronicsmechanical
Top Patents1 enriched
US RE48399· 2021
How to Make Electric Motors Run Smoother and Last Longer
Activity by Decade
2020s1
Top Patents1 enriched
US 98304· 1869
William Semple's 1869 Patent for Improved Chewing Gum
Activity by Decade
1860s1
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