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SYSTEMS AND METHODS FOR ENERGY STORAGE AND RECOVERY USING GAS EXPANSION AND COMPRESSION

13/154,996 | U.S. Patent Application

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Location ELECTRONIC
Filed June 7, 2011
Examiner CHRISTOPHER M JETTON
Class 060
Art Group 3748
Patent No. 8,448,433
Case Type Utility - 060/508000
Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Parent 12/639,703 Patented
Parent 12/421,057 Patented
Parent 61/148,691 Expired
Parent 61/43,630 Expired
Parent 12/481,235 Patented
Parent 61/59,964 Expired
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Last Updated: 2 years, 6 months ago
Date # Transaction