US3458743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive ion source for use with a duoplasmatron
Assignee: Radiation Dynamics Inc
•
Filing: 1966-12-19
•
Granted: 1969-07-29
•
Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Marshall R Cleland
- 👤 Chester C Thompson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:30
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/08; H01J27/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2978580A
Cited
US3164739A
Cited
US3265918A
Cited
US3178604A
Cited
US3315125A
Cited
US3238414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |