US2700743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intensification of an electron beam from cold-cathode discharge
Assignee: Individual
•
Filing: 1951-10-05
•
Granted: 1955-01-25
•
Expires: 1971-10-05
Abstract
No abstract record available.
Inventors
- 👤 John H Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/481
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2152487A
Cited
US1977398A
Cited
US2050411A
Cited
US1997356A
Cited
US2161316A
Cited
US2368328A
Cited
US2408039A
Cited
US2363359A
Cited
US2611884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |