US2161458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminescent screen
Assignee: Koninklijke Philips NV
•
Filing: 1936-09-22
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Granted: 1939-06-06
•
Expires: 1956-09-22
Abstract
No abstract record available.
Inventors
- 👤 Boer Jan Hendrik De
- 👤 Teves Marten Cornelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-06-05 | 1942-12-05 | 1943-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-05 | 1946-12-05 | 1947-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-05 | 1950-12-05 | 1951-06-06 | $7700.00 | Window Closed / Lapsed |