US3173248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionization and plasma acceleration apparatus
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1960-11-07
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Granted: 1965-03-16
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Daniel L Curtis
- 👤 Hansen Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:27
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/16; F; F03; F03H; F03H1/00; H05; H05H; H05H1/00; H05H1/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
IN COMBINATION, A SPACE VEHICLE, A PROPULSION SYSTEM MOUNTED IN SAID VEHICLE, SAID PROPULSION SYSTEM INCLUDING A FLARED ELECTRICAL COIL HAVING A PLURALITY OF TURNS MOUNTED ON SAID VEHICLE AND DEFINING A CONICAL SPACE SAID SPACE BEING OPEN AT ITS LARGER END TOWARD THE OUTSIDE OF SAID VEHICLE, A SINGLE PHASE SOURCE OF HIGH FREQUENCY ELECTRICAL SIGNALS CONNECTED ACROSS THE TURNS OF SAID FLARED COIL, MEANS FOR COOLING SAID COIL, MEANS FOR SUPPLYING IONIZABLE MATERIAL TO A ZONE NEAR THE CENTER OF SAID CONICAL SPACE, AND MEANS FOR PREIONIZING THE MATERIAL SUPPLIED TO SAID CONICAL SPACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |