Patent US2090098A successfully refreshed from Google Patents.
US2090098A
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Glass resisting metal vapors
Assignee: Schott AG
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Filing: 1933-04-07
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Granted: 1937-08-17
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Expires: 1953-04-07
Abstract
No abstract record available.
Inventors
- 👤 Berger Edwin
- 👤 Harries Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:18
CPC Classifications
E; E02; E02B; E02B11/00; E02B11/005; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/12; C03C3/14; C03C3/145; C03C4/00; C03C4/20; C03C8/00; C03C8/24
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) | 1940-08-16 | 1941-02-15 | 1941-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-16 | 1945-02-15 | 1945-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-16 | 1949-02-15 | 1949-08-17 | $7700.00 | Window Closed / Lapsed |