US 4439769ACTIVE SECRECY ORDER
COMBINED ADAPTIVE SIDELOBE CANCELLER AND FREQUENCY FILTER SYSTEM
Assignee
Filed
Oct 2, 1975
Granted
Mar 27, 1984
Location
NY US
Abstract
A combined adaptive sidelobe canceller and frequency filter system eliminating the narrow band interfering signals by use of the adaptive frequency and eliminating the broad band interfering signals by the adaptive sidelobe canceller.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 3, 1982
Rescinded
Never rescinded
Duration
43y 11mo — still active
This secrecy order has no recorded rescission date in USPTO records. The order may still be legally in force, or rescission data may not be publicly available.
Inventor
- 1RAYMOND J. MASAK
Record Details
- Patent number
- US 4439769
- Application
- 05618291
- 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