Individual holder
SPELMAN JOHN R
US·2 granted patents·1 pending application·5 citations·filing 2013–2016
Individually held — no corporate assignee on record.
Technology mixA63B3
Top patents by PatentIndex Score
3 records- 0159US8968113B2Golf putting trainer deviceSPELMAN JOHN R·Filed 2013·Granted Mar 3, 2015·5 cites·24 claims
- 0236US9586122B2Golf putting trainer deviceSPELMAN JOHN R·Filed 2015·Granted Mar 7, 2017·0 cites·24 claims
- 0329US2017203182A1Golf putter with training deviceSPELMAN JOHN R·Filed 2016·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →