US2487776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burning space heater
Assignee: Individual
•
Filing: 1946-06-04
•
Granted: 1949-11-08
•
Expires: 1966-06-04
Abstract
No abstract record available.
Inventors
- 👤 William G Cartter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:27
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C15/00; F24C15/30; F24C1/00; F24C1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1066394A
Cited
US1216848A
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US1660690A
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US1891047A
Cited
US1947830A
Cited
US1975921A
Cited
US2139250A
Cited
US2190349A
Cited
US2163928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |