Patent DE3828478A1 successfully refreshed from Google Patents.
US1941411A
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Regenerative glass melting furnace and burner control mechanism therefor
Assignee: Hartford Empire Co
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Filing: 1930-10-03
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Granted: 1933-12-26
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Expires: 1950-10-03
Abstract
No abstract record available.
Inventors
- 👤 Mulholland Vergil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; H; H05; H05K; H05K1/00; H05K1/02; H05K1/0286; H05K1/0287; H05K1/0289; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/098; H05K2201/10; H05K2201/10227; H05K2201/1028; H05K3/00; H05K3/10; H05K3/107; Y; Y02; Y02P; Y02P40/00; Y02P40/50
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) | 1936-12-25 | 1937-06-26 | 1937-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-25 | 1941-06-26 | 1941-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-25 | 1945-06-26 | 1945-12-26 | $7700.00 | Window Closed / Lapsed |