Inventor · disambiguated record

Donald E. Hagenbart

Also filed as: HAGENBART DONALD E

2 granted patents·190 citations·filing 1977–1977

70Inventor score

Technology areasB42C B65H

Files withDONNELLEY & SONS CO1 R R DONNELLEY & SONS INC1

Top patents by PatentIndex Score

2 records

0191US4121818ASignature collating and binding systemDONNELLEY & SONS CO·Filed 1977·Granted Oct 24, 1978·141 cites·31 claims
0283US4141492ASignature verifier with indicia sensorR R DONNELLEY & SONS INC·Filed 1977·Granted Feb 27, 1979·49 cites·19 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →