US2697125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric glass melting furnace
Assignee: General Electric Co
•
Filing: 1953-08-18
•
Granted: 1954-12-14
•
Expires: 1973-08-18
Abstract
No abstract record available.
Inventors
- 👤 Ronald W Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:02
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US742419A
Cited
GB190304031A
Cited
US867948A
Cited
US1044957A
Cited
US2131599A
Cited
US2209515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |