US639437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle for feeding fine fuel to furnaces.
Assignee: IDEAL FUEL FEEDER Co
•
Filing: 1899-08-29
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Granted: 1899-12-19
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Expires: 1919-08-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:52
CPC Classifications
F; F23; F23D; F23D1/00
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) | 1902-12-19 | 1903-06-20 | 1903-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-12-19 | 1907-06-20 | 1907-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-12-19 | 1911-06-20 | 1911-12-20 | $7700.00 | Window Closed / Lapsed |