US2940864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a fluorescent screen
Assignee: GTE Sylvania Inc
•
Filing: 1954-03-24
•
Granted: 1960-06-14
•
Expires: 1974-03-24
Abstract
No abstract record available.
Inventors
- 👤 William R Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:19
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/225; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1706038A
Cited
US2187624A
Cited
US2173032A
Cited
US2191827A
Cited
US2152077A
Cited
US2129295A
Cited
US2278742A
Cited
US2221474A
Cited
US2252590A
Cited
US2289156A
Cited
US2394656A
Cited
US2334112A
Cited
US2310863A
Cited
US2433116A
Cited
GB592860A
Cited
US2446440A
Cited
US2682478A
Cited
US2687360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |