US3412559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion engine casting construction and method of making same
Assignee: Individual
•
Filing: 1966-07-06
•
Granted: 1968-11-26
•
Expires: 1986-07-06
Abstract
No abstract record available.
Inventors
- 👤 Sohl Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:03
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/08; H01J27/14; F; F03; F03H; F03H1/00; F03H1/0037; F03H1/0056; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2460684A
Cited
US3162398A
Cited
US3273336A
Cited
US3171081A
Cited
US3159967A
Cited
US3238715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |