US2773246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed sapphire wave guide window
Assignee: The General Electric Company PLC
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Filing: 1952-10-16
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Granted: 1956-12-04
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Expires: 1972-10-16
Abstract
No abstract record available.
Inventors
- 👤 Brook Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/36; H01P; H01P1/00; H01P1/08; H03; H03H; H03H2/00; H03H2/005; H03H2/006
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |