US2903876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace or reactor
Assignee: Phillips Petroleum Co
•
Filing: 1955-01-24
•
Granted: 1959-09-15
•
Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Louis G Nannini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:18
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D1/045; F27B; F27B7/00; F27B7/20; F27B7/28; F27D1/14; F27D1/141; F27D2001/0046; F27D2001/005; F27D2001/0053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1570617A
Cited
US2417348A
Cited
US2482618A
Cited
US2563908A
Cited
US2705414A
Cited
US2731466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |