IP Library Granted Patent US 6,425,263
Granted Patent Utility
US 6,425,263 · Confirmation No. 8432

APPARATUS AND PROCESS FOR THE REFRIGERATION, LIQUEFACTION AND SEPARATION OF GASES WITH VARYING LEVELS OF PURITY

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2000-08-22 LET. Miscellaneous Incoming Letter 11 View
2000-08-22 LET. Miscellaneous Incoming Letter 52 View
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Quick Facts
Patent No.
US 6,425,263
App. No.
09/643,420
Filed
2001-08-23
Effective Filing
2000-08-22
Granted
2002-07-30
Art Unit
3744
PTA
0 days