Portfolio comparison
John L. Mason vs CLAUDE R WICKARD
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
Company B
CLAUDE R WICKARD
Patents indexed
1
Year range
1943
Most recent
1943
consumer_electronicsmechanicalmaterials
Top Patents1 enriched
US 2331117· 1943
How the First Aerosol Spray Can Works
Activity by Decade
1940s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.