Patent US2547511A successfully refreshed from Google Patents.
US655761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator for ovens.
Assignee: WROUGHT IRON RANGE Co
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Filing: 1900-02-05
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Granted: 1900-08-14
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Expires: 1920-02-05
Abstract
No abstract record available.
Inventors
- 👤 Walter L Culver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/02; F24C15/20; F24C15/2007
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) | 1903-08-14 | 1904-02-13 | 1904-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-08-14 | 1908-02-13 | 1908-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-08-14 | 1912-02-13 | 1912-08-14 | $7700.00 | Window Closed / Lapsed |