Karl-Arvid Hamrin

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Kungsor, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method and a device of treating a continuous material web with infr...
- Patent number 5,440,821
- Issue date Aug 15, 1995
- Infrarodteknik AB
- Karl-Arvid Hamrin
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for heat treatment of material, particularly infra-red ra...
- Patent number 5,060,397
- Issue date Oct 29, 1991
- Infrarodteknik AB
- Karl-Arvid Hamrin
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Infra-red radiant heater with reflector and ventilated framework
- Patent number 4,968,871
- Issue date Nov 6, 1990
- Infrarodteknik, AB
- Karl-Arvid Hamrin
- F21 - LIGHTING