US1704956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating oil shale
Assignee: Individual
•
Filing: 1924-09-02
•
Granted: 1929-03-12
•
Expires: 1944-09-02
Abstract
No abstract record available.
Inventors
- 👤 Milon J Trumble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/06; Y; Y10; Y10S; Y10S208/00; Y10S208/951
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) | 1932-03-11 | 1932-09-10 | 1933-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-11 | 1936-09-10 | 1937-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-11 | 1940-09-10 | 1941-03-12 | $7700.00 | Window Closed / Lapsed |