Patent US3273062A successfully refreshed from Google Patents.
US3273062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of propagating radio energy by means of artificial scatterers
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1963-08-30
•
Granted: 1966-09-13
•
Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Raabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:50
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/0006; H01Q15/0013; H01Q15/002; Y; Y10; Y10S; Y10S343/00; Y10S343/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |