Inventor · disambiguated record

Douglas M. Spranger

Also filed as: SPRANGER DOUGLAS · SPRANGER DOUGLAS M

30 granted patents·7,509 citations·filing 19751997

98Inventor score
Technology areasA61BA61ME06CA61FB62B
Files withBROOKES MALCOLM J3INT TELEPHONE AND TELEGRAPH CORPORATION3SEIKO TIME CORP3HUMAN FACTORS IND DESIGN INC2ITT2

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30 records

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