Inventor · disambiguated record
Douglas J. Sproal
Also filed as: SPROAL DOUGLAS J
2 granted patents·1 pending application·0 citations·filing 2011–2013
25Inventor score
Technology areasB41J
Top patents by PatentIndex Score
3 records- 0132US2013258029A1Sign maker templates for producing centered labels and methods of useUNGER IV GEORGE FRANCIS·Filed 2013·Application pending·0 cites
- 0231US8471878B2Sign maker templates for producing centered labels and methods of useUNGER IV GEORGE FRANCIS·Filed 2011·Granted Jun 25, 2013·0 cites·17 claims
- 0327US9033488B2Easy load printer media spindleCOBRA SYSTEMS INC·Filed 2013·Granted May 19, 2015·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →