US 6424290Tier 3 — General Defense
NARROWBAND PASSIVE DIFFERENTIAL TRACKING SYSTEM (U)
Assignee
US Government
Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
Filed
Dec 13, 1989
Granted
Jul 23, 2002
Location
BOCA RATON FL US
35 USC §181 Secrecy Order
Imposed
May 21, 1990
Rescinded
May 14, 2001
Duration
10 years, 12 months
Inventor
- 1GARY E. O'NEIL
Record Details
- Patent number
- US 6424290
- Application
- 00745682
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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Back to patent indexSource: USPTO 35 USC §181 secrecy order records