US2597033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary oil burner
Assignee: Individual
•
Filing: 1949-12-13
•
Granted: 1952-05-20
•
Expires: 1969-12-13
Abstract
No abstract record available.
Inventors
- 👤 William R Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:30
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/04; F23D11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1722504A
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US1505746A
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US1640081A
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US1871952A
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US2200278A
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US2202822A
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US2251055A
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US2355897A
Cited
US2507006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |