David E. Enting

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Patents Grantslast 30 patents

Information Patent Grant
Accurately placed stress concentrating aperture in flexible packages
- Patent number 4,404,879
- Issue date Sep 20, 1983
- The Procter & Gamble Company
- Arthur E. Frohwerk
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Accurately placed stress concentrating aperture in flexible packages
- Patent number 4,332,327
- Issue date Jun 1, 1982
- The Procter & Gamble Company
- Arthur E. Frohwerk
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL