US1369200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of oxidizing fuel
Assignee: STEPHENS ENGINEERING Co
•
Filing: 1918-12-26
•
Granted: 1921-02-22
•
Expires: 1938-12-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
F; F23; F23C; F23C99/00; F23C2700/00; F23C2700/06; F23C2700/063; F23C2700/066
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1924-02-22 | 1924-08-23 | 1925-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-02-22 | 1928-08-23 | 1929-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-02-22 | 1932-08-23 | 1933-02-22 | $7700.00 | Window Closed / Lapsed |