US3535138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a luminescent layer to a glass support
Assignee: US Philips Corp
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Filing: 1967-07-24
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Granted: 1970-10-20
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Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Willem Lambertus Wanmaker
- 👤 Johannes Wilhelmus Mari Arents
- 👤 Marinus Gerardus Antoine Tak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:29
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |