US3441900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal detection,identification,and communication system providing good noise discrimination
Assignee: Control Data Corp
•
Filing: 1967-07-18
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Granted: 1969-04-29
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Expires: 1987-07-18
Abstract
No abstract record available.
Inventors
- 👤 Meredith S Ulstad
- 👤 Arthur E Neuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:12
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/80; G01S3/802; G01S3/803; G01S3/8032; Y; Y10; Y10S; Y10S367/00; Y10S367/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |