Patent US5457116A successfully refreshed from Google Patents.
US2591820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension mounting for the focussing device of cathode-ray tubes
Assignee: Pye Electronic Products Ltd
•
Filing: 1949-01-28
•
Granted: 1952-04-08
•
Expires: 1969-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jackson Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:07
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2224933A
Cited
US2212206A
Cited
US2219193A
Cited
US2200039A
Cited
US2234720A
Cited
US2442975A
Cited
US2431077A
Cited
US2416687A
Cited
US2418487A
Cited
US2433682A
Cited
US2443973A
Cited
US2443025A
Cited
US2456399A
Cited
US2440403A
Cited
US2501516A
Cited
US2521061A
Cited
US2533687A
Cited
US2533688A
Cited
US2533689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |