US1388531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-fuel
Assignee: CHEMICAL FUEL Co OF AMERI
•
Filing: 1920-03-09
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Granted: 1921-08-23
•
Expires: 1940-03-09
Abstract
No abstract record available.
Inventors
- 👤 Elbridge W Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1608; C10L1/1616; C10L1/18; C10L1/185; C10L1/1852
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) | 1924-08-22 | 1925-02-21 | 1925-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-22 | 1929-02-21 | 1929-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-22 | 1933-02-21 | 1933-08-23 | $7700.00 | Window Closed / Lapsed |