US3033538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid heaters
Assignee: Babcock and Wilcox Co
•
Filing: 1956-06-11
•
Granted: 1962-05-08
•
Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Iddles Alfred
- 👤 Charles U Savoye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:30
CPC Classifications
G; G21; G21D; G21D5/00; G21D5/04; G21D5/08; F; F22; F22B; F22B1/00; F22B1/02; F22B1/06; F22B1/063; F22B3/00; F22B3/04; F22D; F22D1/00; F22D1/16; G21C; G21C1/00; G21C1/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB345794A
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US1942878A
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US2209975A
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US2391244A
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US2375702A
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US2710443A
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GB723867A
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US2669435A
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US2879050A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |