US2518005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary spark-arresting screen for fireplaces
Assignee: Individual
•
Filing: 1947-10-28
•
Granted: 1950-08-08
•
Expires: 1967-10-28
Abstract
No abstract record available.
Inventors
- 👤 Carl A Gustafson
- 👤 Frank R Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:07
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191; F24B1/192; Y; Y10; Y10S; Y10S160/00; Y10S160/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |