US2800768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner construction
Assignee: RTX Corp
•
Filing: 1954-08-19
•
Granted: 1957-07-30
•
Expires: 1974-08-19
Abstract
No abstract record available.
Inventors
- 👤 Leslie F Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:30
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/10; F23R3/12; F23R3/14; F23R3/28; F23R3/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1102510A
Cited
US2204451A
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US2260062A
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US2404335A
Cited
US2502664A
Cited
US2560223A
Cited
US2594062A
Cited
US2731709A
Cited
US2663365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |