US1383506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater attachment for grates and stoves
Assignee: F W BOSTROM
•
Filing: 1919-06-10
•
Granted: 1921-07-05
•
Expires: 1939-06-10
Abstract
No abstract record available.
Inventors
- 👤 Westerlund Charlie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:32
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885; F24B1/1886
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-07-04 | 1925-01-03 | 1925-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-07-04 | 1929-01-03 | 1929-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-07-04 | 1933-01-03 | 1933-07-05 | $7700.00 | Window Closed / Lapsed |