Inventor · disambiguated record
Clifton W. Heffner
Also filed as: HEFFNER CLIFTON W
3 granted patents·58 citations·filing 1978–1978
73Inventor score
Files withSIGMA SYSTEMS3
Top patents by PatentIndex Score
3 records- 0169US4265074AWeb processing mechanism for forming packagesSIGMA SYSTEMS·Filed 1978·Granted May 5, 1981·27 cites·7 claims
- 0261US4262470APackaging system with cantilevered web feed system accessible for changing webSIGMA SYSTEMS·Filed 1978·Granted Apr 21, 1981·16 cites·9 claims
- 0359US4262474AWeb feeding system for package forming machineSIGMA SYSTEMS·Filed 1978·Granted Apr 21, 1981·15 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →