Portfolio comparison
Automatic Electric Co vs John L. Mason
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Automatic Electric Co
Patents indexed
1
Year range
1925
Most recent
1925
telecommunicationsmechanical
Top Patents1 enriched
US 1537326· 1925
How Early Telephone Systems Managed Busy Lines Automatically
Activity by Decade
1920s1
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
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