US3534375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-feed cone cassegrain antenna
Assignee: National Aeronautics and Space Administration
•
Filing: 1968-07-09
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Granted: 1970-10-13
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Expires: 1988-07-09
Abstract
No abstract record available.
Inventors
- 👤 Charles T Stelzried
- 👤 Gerald S Levy
- 👤 Masakazu Smoot Katow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:51
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/18; H01Q19/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA662023A
Cited
US3164835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |