Owe C. G. Larkfeldt

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Patents Grantslast 30 patents

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Process and device for production of concrete pipe by filling and c...
- Patent number 4,342,713
- Issue date Aug 3, 1982
- AB Skanska Cementgjunteriet
- Owe C. G. Larkfeldt
- B28 - WORKING CEMENT, CLAY, OR STONE