US858640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of burning finely-divided fuel.
Assignee: Individual
•
Filing: 1906-04-30
•
Granted: 1907-07-02
•
Expires: 1926-04-30
Abstract
No abstract record available.
Inventors
- 👤 George S Welles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:21
CPC Classifications
F; F23; F23D; F23D1/00; F23C; F23C10/00; F23C10/002; Y; Y10; Y10S; Y10S48/00; Y10S48/04
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) | 1910-07-01 | 1910-12-31 | 1911-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-07-01 | 1914-12-31 | 1915-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-07-01 | 1918-12-31 | 1919-07-02 | $7700.00 | Window Closed / Lapsed |