US2718919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary oil-burner
Assignee: Individual
•
Filing: 1952-05-15
•
Granted: 1955-09-27
•
Expires: 1972-05-15
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
- 👤 Alvin W Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:23
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/04; F23D11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US989640A
Cited
US1722504A
Cited
US1643436A
Cited
US1891835A
Cited
US2534160A
Cited
US2564384A
Cited
US2597033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |