Patent US4970509A successfully refreshed from Google Patents.
US3356579A
Expired / Lapsed
US
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Radiation window glass
Assignee: Corning Glass Works
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Filing: 1964-01-29
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Granted: 1967-12-05
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Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Roy V Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:32
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/102; C03C3/095
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2392314A
Cited
US2477329A
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US2747105A
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US2856303A
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US2964414A
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US3046148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |