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Patent US3377058A successfully refreshed from Google Patents.
US3377058A
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Cupola furnace installations having a safety bypass
Assignee: Ajem Laboratories Inc
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Filing: 1965-09-21
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Granted: 1968-04-09
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Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Panzica Nicholas John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:28
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/18; C; C21; C21B; C21B7/00; C21B7/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR426463A
Cited
US1171696A
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US1333325A
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US1497727A
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US2058919A
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US2208443A
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US2723842A
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US3173980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |