Portfolio comparison
Christopher Latham Sholes vs John L. Mason
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Christopher Latham Sholes
Patents indexed
1
Year range
1878
Most recent
1878
consumer_electronicsmechanical
Top Patents1 enriched
US 207559· 1878
How the QWERTY Keyboard Layout Was Originally Designed
Activity by Decade
1870s1
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.