US2518982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space heater
Assignee: Individual
•
Filing: 1947-03-25
•
Granted: 1950-08-15
•
Expires: 1967-03-25
Abstract
No abstract record available.
Inventors
- 👤 Edward R Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:34
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1007000A
Cited
US1093195A
Cited
US1416025A
Cited
US1561243A
Cited
US1731058A
Cited
US1743573A
Cited
US1767082A
Cited
US1907357A
Cited
US2290402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |