Edward Schaefer

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Bellwood, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Atmosphere control for photographic pipeline inspection
- Patent number 4,434,427
- Issue date Feb 28, 1984
- Magnaflux Corporation
- Frederick Clarke
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Pipeline inspection apparatus
- Patent number 4,372,658
- Issue date Feb 8, 1983
- Magnaflux Corporation
- Donald T. O'Connor
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic pipeline inspection apparatus including an optical por...
- Patent number 4,363,545
- Issue date Dec 14, 1982
- Magnaflux Corporation
- Edward F. Schaefer
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Pipeline inspection apparatus
- Patent number 4,249,810
- Issue date Feb 10, 1981
- Magnaflux Corporation
- Donald T. O'Connor
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY