US2490339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric glass melting furnace and process
Assignee: Corning Glass Works
•
Filing: 1946-09-30
•
Granted: 1949-12-06
•
Expires: 1966-09-30
Abstract
No abstract record available.
Inventors
- 👤 Voe Charles F De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:30
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02; C03B5/027; C03B5/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1552555A
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US1593054A
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US1597073A
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GB350474A
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US1897973A
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US1880541A
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US2225616A
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US2122469A
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US2267537A
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US2350734A
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US2397852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |