US2675462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating means for television apparatus
Assignee: EMI Ltd
•
Filing: 1950-05-09
•
Granted: 1954-04-13
•
Expires: 1970-05-09
Abstract
No abstract record available.
Inventors
- 👤 Newton George Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:27
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/14; F; F21; F21V; F21V21/00; F21V21/14; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US947058A
Cited
US1842855A
Cited
US2129001A
Cited
US2243788A
Cited
US2292044A
Cited
US2399577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |