US2501736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary distributing head oil burner
Assignee: Individual
•
Filing: 1947-04-23
•
Granted: 1950-03-28
•
Expires: 1967-04-23
Abstract
No abstract record available.
Inventors
- 👤 Horace W Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:50
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/04; F23D11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191029298A
Cited
GB104246A
Cited
US1543235A
Cited
US1726640A
Cited
US1726175A
Cited
US1870099A
Cited
US2025526A
Cited
US2112888A
Cited
US2390056A
Cited
US2370345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |