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VARIABLE FIELD EMISSION DEVICE

13/774,893 | U.S. Patent Application

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Location ELECTRONIC
Filed Feb. 22, 2013
Examiner SRINIVAS SATHIRAJU
Class 315
Art Group 2844
Patent No. 9,171,690
Case Type Utility - 315/108000
Status Patented Case
Parent 13/374,545 Patented
Parent 61/631,270 Expired
Parent 61/638,986 Expired
Child 14/863,098 Patented
Child 15/819,569 Abandoned
Child PCT/US13/38233 Published
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Last Updated: 3 years, 9 months ago
Date # Transaction