US2941587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber burner
Assignee: Pan American Petroleum Corp
•
Filing: 1955-07-14
•
Granted: 1960-06-21
•
Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 James D Hagy
- 👤 Harry A Waughtal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:49
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2582938A
Cited
FR749423A
Cited
US2145649A
Cited
US2408282A
Cited
FR917802A
Cited
US2594094A
Cited
US2725933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |