Robert G. Hagstrom

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Wayne, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for the beneficiation, liquefaction and recovery of coal and...
- Patent number 4,671,801
- Issue date Jun 9, 1987
- The Standard Oil Company
- Lester E. Burgess
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...