US2760882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a luminescent layer to the hollow side of a support having a rotation-symmetrical curved surface
Assignee: Hartford National Bank and Trust Co
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Filing: 1952-06-06
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Granted: 1956-08-28
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Expires: 1972-06-06
Abstract
No abstract record available.
Inventors
- 👤 Teves Marten Cornelis
- 👤 Tol Tacke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:47
CPC Classifications
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |