US3138019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma accelerator for wind tunnel
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1960-11-07
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Granted: 1964-06-23
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Fonda-Bonardi Giusto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:08
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN COMBINATION, A WIND TUNNEL, MEANS FOR MOUNTING AN AERODYNAMIC MODEL TO BE TESTED IN SAID WIND TUNNEL, VACUUM PUMPING EQUIPMENT COUPLED TO SAID TUNNEL TO REDUCE THE PRESSURE IN SAID TUNNEL, A PLASMA ACCELERATION COIL STRUCTURE HAVING A SMALL INPUT CROSS-SECTIONAL AREA AND AN OUTPUT END HAVING A CROSS-SECTION OF SIGNIFICANTLY GREATER AREA, THE OUTPUT OF SAID COIL STRUCTURE BEING COUPLED TO SAID WIND TUNNEL, AND MEANS FOR SUPPLYING IONIZABLE MATERIAL TO SAID COIL STRUCTURE AT ITS SMALL INPUT END AND AT ANOTHER POINT ALONG THE LENGTH OF SAID COIL STRUCTURE.
References Cited (Backward Citations)
US2967926A
Cited
US2992345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |