Douglas W. DeGraaf

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Downers Grove, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Superconducting magnetic energy storage apparatus structural suppor...
- Patent number 5,115,219
- Issue date May 19, 1992
- Chicago Bridge & Iron Technical Services
- Gregory J. Withers
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
External flowline across a universal joint
- Patent number 4,318,423
- Issue date Mar 9, 1982
- Chicago Bridge & Iron Company
- Douglas W. DeGraaf
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Offshore mooring system for vessel or ship
- Patent number 4,193,368
- Issue date Mar 18, 1980
- Chicago Bridge & Iron Company
- Douglas W. DeGraaf
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Hose storage and supply apparatus
- Patent number 4,135,543
- Issue date Jan 23, 1979
- Chicago Bridge & Iron Company
- Douglas W. DeGraaf
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...