Portfolio comparison
MAY B CORNWALL vs Expandable Grafts Partnership
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 1469997· 1923
A 1920s Design for a Suspended Monorail Transportation System
Activity by Decade
1920s1
Company B
Expandable Grafts Partnership
Patents indexed
1
Year range
1988
Most recent
1988
medical_devicescardiovascularbiotech
Top Patents1 enriched
US 4733665· 1988
How Doctors Implant a Permanent Stent Using a Balloon
Activity by Decade
1980s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.