US2790920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for control of electron beam cross section
Assignee: Lanteris Space LLC
•
Filing: 1955-05-09
•
Granted: 1957-04-30
•
Expires: 1975-05-09
Abstract
No abstract record available.
Inventors
- 👤 Carl R Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:36
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/56; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2284227A
Cited
US2500623A
Cited
US2608665A
Cited
US2689269A
Cited
US2586948A
Cited
US2707246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |