Individual holder
KETCHUM JOHN L
3 granted patents·131 citations·filing 1978–1984
Individually held — no corporate assignee on record.
Technology mixA63B3
Top patents by PatentIndex Score
3 records- 0185US4553751ARebound apparatusKETCHUM JOHN L·Filed 1984·Granted Nov 19, 1985·71 cites·8 claims
- 0273US4186922AFootball offensive player training apparatusKETCHUM JOHN L·Filed 1978·Granted Feb 5, 1980·36 cites·9 claims
- 0359US4258924ASoccer training apparatusKETCHUM JOHN L·Filed 1979·Granted Mar 31, 1981·24 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →