US2806161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coasting arc ion source
Assignee: Individual
•
Filing: 1952-07-08
•
Granted: 1957-09-10
•
Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Jr John S Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:47
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2507652A
Cited
US2570124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |