US2582454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode grid assembly
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1950-05-13
•
Granted: 1952-01-15
•
Expires: 1970-05-13
Abstract
No abstract record available.
Inventors
- 👤 Pohle Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:36
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/485
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1705356A
Cited
US2244358A
Cited
US2393057A
Cited
US2431137A
Cited
US2476060A
Cited
US2432789A
Cited
US2436265A
Cited
US2510267A
Cited
US2443916A
Cited
US2507979A
Cited
US2459532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |